James 2:19 contrasts mere belief (demons believe) with the active love commanded in the royal law, showing faith without works is dead.

James 2:12 reinforces the royal law by urging obedience under the law of liberty — a direct continuation.

James 1:25 introduces the 'law of liberty' that the royal law here fulfills in loving your neighbor.

Leviticus 19:18 is the OT source of the 'love your neighbor as yourself' command quoted here.

Matthew 22:39 records Jesus quoting the same Levitical command to love your neighbor, which James here calls the royal law.

Mark 12:31-33 also includes Jesus quoting this command, with the scribe affirming it as more important than sacrifices.

Luke 10:27-37 presents the same command and illustrates it with the Good Samaritan parable, showing active neighborly love.

Galatians 5:14 states the whole law is fulfilled in loving your neighbor, same citation James uses here.

Romans 13:9 directly quotes 'love your neighbor as yourself' as summing up the commandments, parallel to James's royal law.

Romans 13:8 teaches that loving others fulfills the law, echoing James's concept of the royal law of love.

1 John 2:7 refers to the old command of love — the same love command James calls the royal law here, emphasizing its continuity.

In Matthew 22:40, Jesus declares that the entire law hangs on love — the same principle James calls the royal law here.

Matthew 19:19 includes 'love your neighbor as yourself' among the commandments, reinforcing the royal law James references.

Matthew 5:43 quotes the same Old Testament command to love your neighbor, directly paralleling the law James cites.

Romans 3:31 asserts that faith upholds the law — a theological parallel to James' insistence that the royal law of love is fulfilled by those who do right.

John 13:34 gives Jesus' new commandment to love one another as He loved — a parallel call to love, but with a higher standard than the old command.

Philippians 2:4 urges believers to look to others' interests — a practical outworking of the love-your-neighbor command James references here.

Galatians 6:2 calls for bearing burdens to fulfill the law of Christ—a related application of love, though not a direct quote.

2 Timothy 3:2 warns of self-love in the last days — the opposite of the neighbor-love James commands here, highlighting the contrast.

Luke 6:31 states the Golden Rule — a parallel ethical principle that similarly focuses on how we treat others, echoing the neighbor-love command.