Why Was There a Tree at All?
Why did Adam need fruit? A question about one strange detail in Genesis, which turns out to run through the clotting of blood, a bronze snake, a shipwreck off Malta, and the last page of Revelation.
The problem
Scripture is emphatic that God is the creator and sustainer of life. He “gives to all mankind life and breath and everything” (Acts 17:25); “in him we live and move and have our being” (v. 28); “in him all things hold together” (Colossians 1:17); he upholds all things “by the word of his power” (Hebrews 1:3). Psalm 104 spends forty-odd verses on the same theme: the dependence of different life forms on God.
Yet set this beside Genesis 2 and something does not fit.
And out of the ground the LORD God made to spring up every tree that is pleasant to the sight and good for food. The tree of life was in the midst of the garden, and the tree of the knowledge of good and evil. — Genesis 2:9, ESV
If God is himself the source and sustainer of life, why would there be any need for a tree of life in the garden? Why interpose fruit between the fountain of life(Himself) and the creature? And why place beside it a second tree whose fruit meant choosing death - the cessation of life- putting the two options, so to speak, on the same shelf?
My claim is that the two trees are not an oddity in the doctrine of providence but a compressed statement of it. They set out the two possible postures a creature can assume toward the sustenance of its life: receiving it through the means God has appointed in His design for life, or stepping out of harmony with that design, which naturally would result in death. Only the first is a way of having life at all. The second is not an alternative route to the same end but a refusal of the only arrangement in which a dependent being can live — which is why its result is not a different kind of life but death. Understand the first tree, and you understand how God has always dealt with creatures. Understand the second, and you understand what went wrong, and why death followed as it did.
A note on translation. The Amplified Bible renders the second tree as “the tree of the [experiential] knowledge (recognition) of [the difference between] good and evil.” Those brackets are an interpretation, and one that happens to favor the argument I am about to make. I think it is the right interpretation, and I defend it in section 4 — but on the text’s own evidence, not on a translator’s parenthesis. The Hebrew says knowledge. What kind of knowledge is the issue at hand.
1. God ordinarily works through means
As we go through Scripture, we see bountiful evidence of the fact that God ordinarily works through creaturely means:
Consider creation. God did not produce vegetation directly. He said, “Let the earth bring forth vegetation,” and the earth did it — “the earth brought forth vegetation” (Genesis 1:11–12). The waters swarmed at his word; the land brought forth living creatures (vv. 20, 24). From the beginning, divine command and creaturely agency were stacked rather than opposed. God made things, and he did it partly by making other things capable of bringing forth.
We see it also in the way the Bible describes ordinary provision. Psalm 104 says God feeds every living thing, and then describes him doing it by growing grass on the hills (vv. 14, 27–28). Paul tells the pagans at Lystra that God never left himself without a witness, in that he gave rains and fruitful seasons and filled their hearts with food and gladness (Acts 14:17) — food that came from their own farms. Jesus teaches us to ask for daily bread (Matthew 6:11): bread that arrives by plowing, harvest, milling, and an oven, and is no less given for that.
We also observe it in how miracles are effected in Scripture. This is the surprising part. Hezekiah is promised fifteen more years by a direct divine word, and Isaiah immediately calls for a poultice of figs to be applied to the boil (Isaiah 38:5, 21). Naaman is cleansed, but only after washing seven times in the Jordan (2 Kings 5:10–14). Jesus, who could heal with a word and often did, also made clay with spittle and put it on a blind man’s eyes (John 9:6), and laid his hand on a leper he could have cured from across the room (Mark 1:41). Timothy is told to take a little wine for his stomach (1 Timothy 5:23). The pattern holds so widely that its great exception is instructive: manna was sustenance with no means at all, and it stopped the day after Israel ate the produce of Canaan (Joshua 5:11–12). The supernatural supply was withdrawn the moment ordinary means became available.
The same principle is at work also in salvation. God saves, and he does so through preaching. “How shall they believe in him of whom they have not heard, and how shall they hear without a preacher?” (Romans 10:14–17). The starkest case is Acts 27. An angel tells Paul that not one life aboard will be lost, which is a flat divine guarantee. A few verses later, as the sailors try to slip away in the boat, Paul tells the centurion that “unless these men stay in the ship, the rest cannot be saved” (vv. 22–24, 31). The outcome was certain, and the means were still necessary. Paul evidently felt no tension between the two.
Aquinas, the Catholic theologian, argued that God works in every created agent, giving it power, preserving that power, and enabling it to act (Summa Theologiae I, q. 105, a. 5). This does not render created causes redundant. The same act may proceed from God as first cause and from a creature as secondary cause, each at its proper level. The Westminster Confession makes the related point that providence ordinarily uses means, although God remains free to work without, above, or beyond them (V.2–3).
C. S. Lewis draws out the same principle in Miracles. Christ’s miracles, he argues, reveal in a sudden and concentrated form what God is already doing throughout creation. At Cana, Christ did in a moment what God ordinarily accomplishes through the vine — turning water, soil, and sunlight into grapes and, eventually, wine. The feeding miracles follow the same pattern: what happens slowly and widely in fields and harvests is brought into view in a single place and moment. As he puts it, “The miracle consists in the shortcut; but the event to which it leads is the usual one.” The miracle is therefore not the appearance of a different power, but the ordinary work of God made sudden and visible.
Ellen White states the principle more compactly than any of them:
The natural life is preserved moment by moment by divine power; yet it is not sustained by a direct miracle, but through the use of blessings placed within our reach. — The Acts of the Apostles, 284
And she presses it toward the point that bears on Eden. In sickness, nature’s agencies are set to work at once; the healing that follows is a real process with real mechanisms, and the power operating through those mechanisms is God’s own. “All life-giving power is from Him” (The Ministry of Healing, 112–113).
2. An observable principle
Suppose you should cut yourself with a sharp object; what do you observe happening to the cut tissue? We understand that the repair begins immediately and without consultation. The damaged vessel first constricts, then platelets adhere to the exposed collagen, activate, and aggregate to form a soft plug. The coagulation cascade — a chain of factors, each activating the next, amplifying at every step — converges on thrombin, which converts fibrinogen to fibrin, turning the plug into a stable clot.
Or consider a broken bone, where the same pattern can be observed for a longer time. Blood pools at the fracture and clots. Inflammatory cells arrive and clear the debris. Within days, a soft callus of cartilage bridges the gap; over the next weeks it is replaced by woven bone — crude, disorganized, but load-bearing. Then comes this most awe-inspiring bit. Osteoclasts(large specialized cells) strip away material where it is not needed, while osteoblasts(specialized, cube-shaped cells responsible for creating new bone tissue and repairing damaged bone) lay it down where the stresses actually fall, until the mended segment has been re-engineered along the lines of the load it carries. Nineteenth-century anatomists noticed that bone organizes itself according to the forces put through it and named the observation after Julius Wolff.
These processes take place without our conscious direction. They are neither autonomous nor infallible. Clotting could overshoot, producing a dangerous obstruction; healing may result in excessive scar tissue; a fracture may fail to unite. We are looking at life in a damaged world. Still, the ordinary direction of these processes is toward preservation and restoration of life. A mechanism may be ordered toward healing without succeeding in every case.
Walter Cannon called this class of phenomena the wisdom of the body; the Hippocratics called it vis medicatrix naturae, the healing power of nature. Both names locate the agency one step short of where it belongs. The mechanism is nature’s, but the power is God’s, and the direction of the mechanism — always toward repair and sustenance of life and never toward its ruin — tells us something about the character of He who wrote the law into the flesh.
So we can observe the pattern before we get back to meditate on Eden. We see that divine power is exercised continuously through appointed created means (natural processes) that operate under fixed laws to sustain life.
3. The tree of life fits the pattern
If we concede that this is the observable pattern by which life is sustained, we begin to see how the tree of life fits it.
Consider that Adam, without achievement or struggle, was to obtain his sustenance. “You may eat of every tree in the garden… except the tree of the knowledge of good and evil”, was the divine instruction. And later on, in God’s cautious statement after the fall, we see that the tree of life served the continuance of man’s existence. While other trees may sustain his biological and physical needs, only the tree of life could ensure his continued existence. But like the other patterns we have seen, it was only a means provided by God for this noble purpose — the sustenance of life.
The tree posed no rivalry to God. An instrument does not compete with the hand that employs it. Aquinas says that the tree was a cause of continued life “in a certain degree,” but not absolutely. Its power was finite and derivative; it preserved life without being the ultimate source of life (ST I, q.97, a.4). Calvin stresses another side of the same truth. He calls the tree a “symbol and memorial” of the life Adam had received from God, an outward sign that reminded him that he lived by divine kindness rather than by an intrinsic power of his own (Commentary on Genesis 2:9).
That begins to answer the question we began with, and it is worth stating slowly, because the question rested on a bad assumption.
The question was: if God is himself the source of life, why interpose a tree? Framed that way, the tree sounds like a middleman, an intermediary — and a middleman is needed only when the principal cannot reach the other party directly. But the reason for the tree lies not in a deficiency in God, but in the kind of being Adam was. He was an embodied creature whose life was received rather than self-existent.
“The Father has life in himself, and he has granted the Son to have life in himself” (John 5:26). Creaturely life is of a different order altogether. It is given and continuously upheld. Thus Adam did not receive a stock of life that thereafter became his independent possession. He lived because God kept giving and he kept receiving, and the tree of life made that dependence concrete.
4. The second tree
What, then, did the other tree represent?
Adam was not ignorant of the moral issue. God had plainly distinguished the permitted from the forbidden and had named the consequence of disobedience. Nor can knowledge as such have been the problem. Scripture treats wisdom and knowledge as gifts from God.
We should be careful here with the Hebrew verb yādaʿ, “to know.” The word has a broad range of uses, and it does not by itself prove that the knowledge was experiential or participatory. The expression “knowing good and evil” can refer elsewhere to moral maturity or the ability to render judgment (Deuteronomy 1:39; 2 Samuel 14:17; 1 Kings 3:9). The meaning in Genesis must therefore come from the narrative.
Several details point in the same direction. Adam and Eve already knew what obedience required. The serpent did not offer them information about which tree was forbidden; he challenged God’s account of what the tree meant. His promise was, “You will be like God, knowing good and evil” (Genesis 3:5). The attraction was the prospect of wisdom possessed on their own terms. They would no longer receive the distinction between good and evil from God’s word. They would take it into their own hands.
Calvin’s phrasing is apt: Adam sought to “constitute himself an arbiter and judge of good and evil.” Von Rad and Wenham, in different ways, also connect the act with the seizure of a divine prerogative. That conclusion should not be made to rest on a dictionary definition of yādaʿ. It rests on the command, the serpent’s promise, and the act of taking what God had withheld.
The contrast between the trees becomes clearer. The tree of life was the appointed means of receiving life from God. The tree of knowledge was the symbolic act of stepping outside that arrangement altogether — outside the circuit of beneficence, outside the framework within which a dependent being can be alive at all, a denial of creaturehood.
5. Death as consequence rather than sentence
Considered this way, the warning of Genesis 2:17 needs no juridical machinery to make sense. God was making a statement about the structure of reality, not simply imposing a penalty for a rule. Paraphrased: to eat of this tree is to choose life outside the framework of life as I have designed it; the end of such a life is death.
Scripture often speaks using this consequential grammar. Deuteronomy 30:15–20, for example, sets life and death before Israel and then explains the choice in terms of loving God, obeying his voice, and holding fast to him, “for he is your life.” James describes desire conceiving, giving birth to sin, and sin, when fully grown, bringing forth death (1:15). Galatians speaks of reaping what is sown (6:7–8). Romans 6:23 draws the contrast in a single sentence: death is the wages of sin, while eternal life is the gift of God.
Yet consequence and sentence should not be thought contrary to each other. The narrative portrays God judging, pronouncing the return to dust, expelling the pair, and guarding the way to the tree. God is clearly not passive when man sins. However, we see that the judgment is neither arbitrary nor foreign to the nature of the choice. The sentence names and confirms the reality into which sin has brought them. God does not invent a connection between separation and death; he tells the truth about it and acts within that truth.
Death is therefore both consequence and judgment. It grows from sin’s rupture with the source of life, and it occurs under the judgment of the God who refuses to sustain rebellion forever. Thus we can understand the force of the biblical language without turning God into the author of death. His activity remains what it was in creation: he gives, preserves, warns, restrains, and restores. “Satan is the destroyer; God is the restorer.”
The command also reveals how heavily Eden was weighted toward life. Adam was not placed between equal inducements. The whole garden and earth were given to him; one tree alone was withheld. Obedience required no struggle or heroic achievement. It meant remaining within a generosity that already surrounded him.
6. Objection: Genesis 3:22 makes the tree causal, not symbolic
The strongest objection to this reading comes from the text itself.
Then the LORD God said, “Behold, the man has become like one of us in knowing good and evil. Now, lest he put forth his hand and take also of the tree of life and eat, and live forever—” therefore the LORD God sent him out from the garden of Eden. — Genesis 3:22–23
If the tree was only a symbol, why guard it with cherubim and a flaming sword? The verse plainly assigns some real efficacy to the tree.
The answer is to give up the word only. The tree was symbolic, but not merely symbolic. Created means can have genuine effects without possessing independent power. Food truly nourishes. Medicine truly heals. Neither is the first source of life. In the same way, the tree could really preserve life while remaining an instrument of divine provision. Genesis 3:22 therefore does not undermine this account but rather keeps us from reducing the tree to a visual lesson with no causal role.
In light of this, the expulsion of the couple appears as both judgment and mercy. God prevents fallen human beings from using the tree to perpetuate their ruined condition. He does not permit alienation, shame, accusation, and violence to become an endless form of existence. The barred way is severe, but its severity serves the promise that evil will have an end
The later biblical use of the image supports this reading. The tree is absent from the human story while sin runs its course, then returns in Revelation 2 and 22, no longer guarded from the redeemed. The canonical pattern is plain enough: access is lost after rebellion and restored when God makes all things new.
7. The same pattern in the spiritual life
The spiritual life follows the same order. It begins with God and remains dependent upon God, yet it is ordinarily nourished through appointed means: Scripture, prayer, worship, fellowship, confession, obedience, and service. None of these contains life as an independent possession. They are the places in which God has taught us to receive, exercise, and remain in the life he gives.
Ellen White draws the parallel directly:
The natural life is preserved moment by moment by divine power; yet it is not sustained by a direct miracle, but through the use of blessings placed within our reach. So the spiritual life is sustained by the use of those means that Providence has supplied. If the follower of Christ would grow up “unto a perfect man, unto the measure of the stature of the fulness of Christ” (Ephesians 4:13), he must eat of the bread of life, and drink of the water of salvation. — The Review and Herald, August 31, 1911; cf. The Acts of the Apostles, 284
This rules out the expectation of a spiritual life that matures while neglecting the means by which communion with God is maintained. It also rules out treating those means as sources of life in themselves. Reading Scripture is not a substitute for Christ; prayer does not operate as a spiritual mechanism detached from him. These practices sustain spiritual life because through them the Spirit keeps us in living communion with Christ.
All the means finally converge upon a person. Jesus does not merely hand out the bread of life. He says, “I am the bread of life” (John 6:35), and “whoever feeds on this bread will live forever” (v. 58). He is not one means alongside others. He is the Life to whom every appointed means directs us.
Eden’s pattern has therefore not been discarded. Life is still a gift, still received, and still found in communion with God. The outward forms may differ, but the creature never outgrows dependence upon the Giver.
Conclusion
Why was there a tree if God himself was the source of life? Because God gives creaturely life as creaturely life can be given: as a gift received from his hand. The tree did not fill a gap between a distant God and Adam. It gave bodily form to the truth of Adam’s existence. He lived from God, and he lived by receiving.
Rejecting the means of life was not simply breaking an arbitrary rule. It was to turn from the way life was given while trying to keep life itself. Death is the eventual form of that contradiction.
At the end of Scripture, the tree stands again beside the river of life. Its leaves are for the healing of the nations, and no sword bars the way (Revelation 22:1–2). Ezekiel had seen the same river and healing leaves in vision (Ezekiel 47:12). And the Life-giver’s promise to the churches is that “the one who overcomes will eat from the tree of life in the paradise of God” (Revelation 2:7).
The two trees thus ask one question in a form an embodied creature can answer: Will you receive life from the hand of God, or try to possess it apart from him?
References
Divine conservation and concurrence: Acts 17:24–28; Psalm 104:27–30; Colossians 1:17; Hebrews 1:3; Nehemiah 9:6.
Providence through secondary causes: Aquinas, Summa Theologiae I q.22 a.3; I q.97 a.4; I q.105 a.5. Calvin, Institutes I.16–17 and Commentary on Genesis 2:9. Westminster Confession of Faith V.2–3. Ellen White, The Acts of the Apostles 284; The Ministry of Healing 112–113; Education 22–27; Patriarchs and Prophets ch. 3.
The knowledge of good and evil: Gerhard von Rad, Genesis: A Commentary, on 2:9 and 3:5; Gordon Wenham, WBC: Genesis 1–15, excursus on the trees; Claus Westermann, Genesis 1–11.
Consequential accounts of death: Deuteronomy 30:15–19; James 1:14–15; Galatians 6:7–8; Romans 6:23; Ezekiel 18:4, 32.
The tree of life across the canon: Proverbs 3:18; 11:30; 13:12; 15:4; Ezekiel 47:12; Revelation 2:7; 22:2, 14, 19.
Christ as the means: John 6:32–58; 15:1–8.
Physiology: Walter B. Cannon, The Wisdom of the Body (1932); Hippocratic vis medicatrix naturae; any standard account of the hemostatic cascade.
article