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The argument from the new birth

The OSAS argument from regeneration is one of the most intuitive:

  1. The new birth is a divine act, not a human decision.
  2. A divine act cannot be undone.
  3. Therefore a person who is born of God cannot be lost.

The argument has real force. The new birth is not a mood or a phase. It is God's work, and God does not do shoddy work. The question is what kind of work it is.

The OSAS case at its strongest

  • The new birth is entirely God's initiative. "Of his own will he brought us forth by the word of truth" (James 1:18). "You have been born again, not of perishable seed but of imperishable" (1 Pet 1:23). The believer did not generate the life.
  • The seed remains. "No one born of God makes a practice of sinning, for God's seed abides in him" (1 John 3:9). The life principle is permanent.
  • The change is real. "If anyone is in Christ, he is a new creation. The old has passed away; behold, the new has come" (2 Cor 5:17). The person is not merely forgiven; he is remade.
  • The imagery of birth is irreversible. You cannot be unborn. A birth is a once-for-all event.

This is a powerful picture: salvation is not a fragile decision but a new creation. The casebook affirms the reality of the new birth and the permanence of God's work. The disagreement is about what the new birth guarantees.

The problems

1. The new birth is a beginning, and the New Testament treats it as one

A birth is the beginning of a life, not the guarantee of its maturity. The New Testament is written to people who have been born again and are called to grow:

"Like newborn infants, long for the pure spiritual milk, that by it you may grow up into salvation." (1 Pet 2:2)

"Until Christ is formed in you." (Gal 4:19)

"Grow in the grace and knowledge of our Lord and Savior Jesus Christ." (2 Pet 3:18)

If the new birth automatically guaranteed perseverance, the growth language would be unnecessary. The New Testament treats the new life as a life that must be nourished, exercised, and protected.

2. The seed that remains is not a force field

First John 3:9 says God's seed abides in the believer. That is a real promise of permanence. But the same letter warns:

"Let what you heard from the beginning abide in you. If what you heard from the beginning abides in you, then you too will abide in the Son and in the Father." (1 John 2:24)

"Abide in him, so that when he appears we may have confidence and not shrink from him in shame." (1 John 2:28)

The seed is the life; abiding is the relationship. The seed does not make the relationship optional. It makes the relationship possible.

3. The branch imagery is organic, not mechanical

John 15 uses the image of a vine and branches. The branch is alive because it is in the vine. It is not a machine that runs on its own battery. The life is received, and it is received by remaining.

A branch that is cut off is not "unborn"; it is a branch that has been removed from the source of its life. The new birth gives the branch its life; remaining keeps it in the vine. The two images are complementary, not contradictory.

4. The New Testament warns the regenerate

The warnings are not addressed to the world; they are addressed to the church. "Take care, brothers, lest there be in any of you an evil, unbelieving heart" (Heb 3:12). "If anyone among you wanders from the truth" (James 5:19). "I write these things to you who believe" (1 John 5:13), and the same letter warns about sin unto death.

If the new birth made perseverance automatic, these warnings would be either meaningless or cruel. They are neither. They are the means by which God keeps the new life alive.

5. "You cannot be unborn" proves too much

The physical analogy is not pressed by Scripture to guarantee that every birth leads to adulthood. A baby can die. The question is not whether the birth can be reversed; it is whether the life can end.

The biblical alternative to "you can be unborn" is not "you can be unborn." It is "you can fail to remain." The branch is not unborn when it is cut off; it is a branch that has been removed from the vine.

The abiding reading

The new birth is:

  • Real — a divine act, not a human decision.
  • Transformative — a new heart, a new Spirit, a new direction.
  • Evidenced — by love, obedience, repentance, and the fruit of the Spirit.
  • Sustained — by the Word, prayer, community, and the means of grace.
  • Conditional in its continuance — not in the sense that it is earned, but in the sense that it is a life to be lived.

The new birth does not make the believer independent of Christ. It makes him dependent on Christ in a new way. The baby is born to eat, not to run a household on his own.

What this does and does not prove

It proves: that the new birth is real and divine; that the new life must be lived and nourished; and that the New Testament warns the regenerate, not just the world.

It does not prove: that the new birth is a mere decision; that regeneration can be repeated at will; or that a believer who stumbles has lost the life. It proves that the life is a relationship, and that the relationship is meant to continue.

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