Romans 5:15 contrasts the trespass and the free gift, emphasizing that grace abounds more than sin — deepening the parallel between Adam and Christ in 5:18.

Romans 5:19 restates the same logic: Adam's disobedience made many sinners, Christ's obedience makes many righteous — a direct parallel to 5:18.

Romans 3:21 introduces the righteousness of God apart from law, which is the basis for the justification through Christ's act in 5:18.

Romans 3:22 specifies that this righteousness comes through faith in Christ for all believers, adding the condition of faith to the justification in 5:18.

In Romans 4:6, David describes righteousness imputed apart from works—the same imputation that Romans 5:18 says comes through Christ's act.

Romans 3:19 establishes universal accountability under the law, which grounds the universal condemnation from Adam's trespass in 5:18.

Romans 3:20 states no justification by law, contrasting with the justification through Christ's act in 5:18 — law vs. grace.

John 12:32 promises Christ's crucifixion will draw all people — the very act of righteousness that brings justification in 5:18.

1 Corinthians 15:22 echoes the Adam-Christ parallel: as in Adam all die, so in Christ all are made alive.

1 Timothy 2:4-6 expands on Christ as the one mediator who gave Himself as a ransom for all, reinforcing the universal scope.

Hebrews 2:9 states Christ tasted death for everyone, mirroring the 'all men' receiving justification through His righteous act.

Isaiah 53:11 predicts the Servant will justify many by bearing their iniquities—directly foreshadowing Christ's righteous act for all.

Numbers 16:22 shows one man's sin bringing wrath on the whole congregation—an OT pattern prefiguring Adam's role in condemnation.

Acts 13:39 specifies that everyone who believes is justified through Christ, narrowing the universal scope to faith.

In 2 Timothy 1:10, Christ abolishes death and brings life—this is the 'life' that justification brings in Romans 5:18.