(Extracts of Francis Turretin, explained in simple English)
The Tree of Life in the Garden of Eden was not merely an ordinary tree with special biological power. It was called the Tree of Life because God appointed it as a sacred sign and pledge of life to Adam if he continued in obedience to God’s covenant.
Scripture first mentions it in Genesis:
“And out of the ground made the LORD God to grow every tree that is pleasant to the sight, and good for food; the tree of life also in the midst of the garden…” — Genesis 2:9
And later:
“Lest he put forth his hand, and take also of the tree of life, and eat, and live for ever…” — Genesis 3:22
Turretin carefully explains that the tree did not give eternal life by its own natural power, as if the fruit itself contained immortality. Rather, God used the tree as a covenant sign — a visible seal of the life He promised to Adam upon perfect obedience.
The Tree of Life functioned much like the sacraments today. Just as baptism and the Lord’s Supper visibly represent spiritual blessings, the Tree of Life visibly represented the promise of life.
The tree was:
A sign of God’s favor
A pledge of eternal blessedness
A visible reminder that life comes from God alone
Adam was not created independent from God. Even in his sinless state, he depended entirely upon God for continued life and happiness.
The tree constantly reminded Adam:
“Life is not in yourself. Your life is from God, and continued obedience to Him.”
This is why Turretin says the tree was not merely for nourishing the body, but chiefly for confirming God’s covenant promise.
Adam already possessed natural life before the tree was given. He was breathing, thinking, walking, and fellowshipping with God.
So why would it be called the Tree of Life if Adam was already alive?
Because the tree pointed to something greater than earthly existence.
It signified:
Continued life without death
Confirmed blessedness
Eternal communion with God
A higher and unchangeable state of happiness
In other words, Adam was created upright, but he had not yet entered into the full and eternal enjoyment of life that God promised upon perseverance in obedience.
The Tree of Life was God’s visible promise of that future reward.
Turretin rejects the idea that the fruit itself had magical or automatic power to make a person immortal.
The power was not in the tree itself, but in God’s covenant appointment.
This is important.
Throughout Scripture, God often uses outward signs to communicate inward grace:
The rainbow signified God’s covenant with Noah (Genesis 9:13)
Circumcision signified the covenant with Abraham (Genesis 17:11)
Bread and wine signify Christ’s body and blood (1 Corinthians 11:24–25)
In the same way, the Tree of Life signified the promise of life.
Without God’s blessing, the tree itself could do nothing.
After Adam sinned, God drove him out of Eden and barred access to the Tree of Life:
“So he drove out the man… and a flaming sword… to keep the way of the tree of life.” — Genesis 3:24
Why?
Not because the fruit could literally reverse the curse by physical power, but because fallen man had lost the right to the promise symbolized by the tree.
The covenant had been broken.
Adam could no longer claim eternal life through his own obedience.
Therefore, access to the sacramental sign was removed.
This was both:
An act of judgment
And a lesson about man’s fallen condition
Man had forfeited life through sin.
Romans 5:12 says:
“By one man sin entered into the world, and death by sin.”
The Tree of Life in Eden foreshadowed something greater.
Throughout Scripture, life is found in God’s Redeemer.
Christ Himself is the true source of eternal life.
“I am the way, the truth, and the life.” — John 14:6
“In him was life.” — John 1:4
“The gift of God is eternal life through Jesus Christ our Lord.” — Romans 6:23
What Adam lost in the first garden is restored through Christ.
This is why the Tree of Life appears again in Revelation:
“To him that overcometh will I give to eat of the tree of life.” — Revelation 2:7
“Blessed are they that do his commandments, that they may have right to the tree of life.” — Revelation 22:14
In Eden, sinners were shut out from the Tree of Life.
In Christ, believers are brought back to eternal life and fellowship with God.
The Tree of Life was called the Tree of Life because:
It was a divine sign and seal of the covenant of life.
It symbolized eternal blessedness and communion with God.
It reminded Adam that life depended entirely upon God.
It did not work by natural or magical power, but by God’s covenant promise.
It ultimately pointed forward to Christ, who is the true giver of eternal life.
The Tree of Life teaches a central truth of Scripture:
Life is found not in man himself, but in God alone. Through Adam came death; through Christ comes eternal life.