Exodus 20:14 supplies the exact wording of the adultery command James cites, grounding his argument in the Decalogue.

Deuteronomy 5:17 provides the 'do not murder' command from the second giving of the law, reinforcing James's source.

Deuteronomy 5:18 repeats the adultery command, confirming James draws from the Decalogue as recorded in Deuteronomy.

Matthew 5:21-28 expands adultery and murder to inner sins, aligning with James's point that the law's unity extends to intent.

Matthew 19:18 lists the same two commands in Jesus' dialogue, echoing James's use of the Decalogue as a standard.

Mark 10:19 also has Jesus listing these commands, showing their consistent application in Gospel teaching.

Luke 18:20 similarly records Jesus citing these commands, reinforcing their centrality in ethical instruction.

Romans 13:9 sums up these commands under love for neighbor, paralleling James's argument about law-breaking being indivisible.

Psalm 51:4 is David's confession after adultery and murder — the very sins James cites as examples of lawbreaking, showing personal guilt and repentance.

Matthew 5:19 warns against setting aside even the least commandments — James makes the same point that breaking one command makes you guilty of all.

Galatians 5:3 states circumcision obligates one to keep the whole law — identical teaching to James' point that breaking one command makes you a lawbreaker.