Biblion Bible Commentary
Read the introduction to Romans · About this commentary
Where Sin Abounded
Romans 5:18-21
18 So then as through one trespass, all men were condemned; even so through one act of righteousness, all men were justified to life. · WEB
The two-Adam summary lands in strict parallel, the law's entry is explained, and grace out-abounds sin to reign through righteousness.
So then as through one trespass, all men were condemned; even so through one act of righteousness, all men were justified to life.
The comparison closes in its tightest form: one trespass, condemnation touching all; one act of righteousness, justification to life. The one act gathers the whole obedience of Christ to its point — the letter has already located it in his blood Romans 5:9 — and verse 19 restates the mechanism with the verb that matters: as through the one man's disobedience many were made sinners, even so through the obedience of the one, many will be made righteous.
Made — constituted, standing established by another's act. Nobody voted for Adam's headship, and no one earns Christ's; each is a history a person is placed in, one by descent, one by faith Romans 5:17. The parallel all... all states the offer's reach; the receiving clause of verse 17 states its condition; and the letter holds both without blushing.
Then the question the whole two-Adam scheme raises for Israel: where does Sinai fit, if the decisive acts are Adam's and Christ's? Verse 20 answers with a verb of entry: the law came in — came in alongside, entered a story already running — that the trespass might abound.
The purpose clause is severe and exact. The law did not create sin; it converted sin into trespass — measured, charged, undeniable Romans 5:13 — and so made the abounding visible, the way a floodline painted on a wall makes a flood measurable. Diagnosis at full resolution: that was the law's entry assignment Romans 3:20, and chapter 7 will defend its holiness in the same breath Romans 7:13.
And then the sentence the paragraph was built to reach: but where sin abounded, grace abounded more exceedingly Romans 5:20.
The Greek piles the prefix on: super-abounded. Wherever sin rose, grace overtopped it — no floodline reaches higher than the mercy. And the close crowns the chapter's royal language: that as sin reigned in death, even so grace might reign through righteousness to eternal life through Jesus Christ our Lord Romans 5:21. Grace reigns — but through righteousness, never around it: the throne changed occupants without the law losing its honor. Which is exactly the claim the next chapter must defend against its obvious abuse Romans 6:1.
settled What this mark means