To explain what Christ has done, Paul has to go back to the beginning — not to Moses, not to Abraham, but to the first man. The story of redemption has a shape, and that shape was set before the first covenant was made.

"Therefore, just as through one man sin entered into the world, and death through sin, and so death spread to all men, because all sinned" (Romans 5:12).

The sentence is carefully built. Through one man — Adam — sin entered the world. Death came through sin, because a God who had warned that the wages of disobedience was death was not issuing an idle threat. And then Paul adds the clause that has been disputed ever since: death spread to all men, because all sinned. The reach of death is universal. So is the reason for it. Every person who has ever lived under death's shadow lives there not merely because Adam fell, but because every accountable person has sinned in his own right.

That last phrase matters. Paul does not say death spread to all because they sinned in Adam, or because his guilt was credited to them against their will. He says death spread because all sinned. The connection to Adam is real — he opened a door that had never been opened before — but each person walks through that door by his own choice. The universality of sin is confirmed by the rest of the letter: "all have sinned and fall short of the glory of God" (Romans 3:23). Sinned — each one, personally, accountably.

The passage from verse 13 to verse 17 develops a contrast: during the long period between Adam and Moses, there was no written law to transgress — yet people still died. Death reigned even over those who had not sinned against an explicit commandment as Adam had. This is part of Paul's argument that Adam's act introduced something into human history that was larger than any legal code. But it does not mean the children of Adam bear his guilt. It means they inhabit a world shaped by his failure, a world in which sin has become the common story of every person who grows to moral awareness.

Now Paul turns from the one to the other. "But the free gift is not like the transgression. For if by the transgression of the one the many died, much more did the grace of God and the gift by the grace of the one Man, Jesus Christ, abound to the many" (Romans 5:15). This is the great counterpoint. Adam and Christ are not exact mirrors of each other — the difference runs in Christ's favor at every point. The transgression produced a result. The free gift not only corrects that result; it overflows. Grace does not merely undo the damage. It abounds.

The overflow is quantitative and qualitative. "For if by the transgression of the one, death reigned through the one, much more those who receive the abundance of grace and of the gift of righteousness will reign in life through the One, Jesus Christ" (Romans 5:17). Reign in life — not merely survive death, not simply escape condemnation, but reign. The one who receives this gift comes out on the other side of the exchange at a higher position than Adam ever occupied before the fall.

"So then as through one transgression there resulted condemnation to all men, even so through one act of righteousness there resulted justification of life to all men. For as through the one man's disobedience the many were made sinners, even so through the obedience of the One the many will be made righteous" (Romans 5:18–19).

The parallel is structural, not identical in mechanism. Adam's disobedience shaped the world into which every person was born and in which every person has gone on to sin. Christ's obedience — a life lived perfectly under the conditions of human existence, culminating in a death that bore sin's full penalty — provides the ground on which every person who comes to God through faith can be declared righteous. The condemnation is real; the justification is real. Neither is a fiction. The difference is that condemnation follows the path every person has chosen, while justification is offered to all and received by those who trust in Christ.

Paul closes with one of the sharper observations in the letter: the law came in to increase the transgression — not to create sin, but to expose its full measure. "Where sin increased, grace abounded all the more, so that, as sin reigned in death, even so grace would reign through righteousness to eternal life through Jesus Christ our Lord" (Romans 5:20–21). The darkness that Movement II mapped in such relentless detail — it was not the final word. Every inch of it has been answered. Grace has the last word.

Movement III ends here. Movement IV begins by asking the question that grace forces on every person who understands it.