Romans 11:20 reinforces the warning: broken branches fell due to unbelief, so Gentiles stand only by faith — directly explaining the humility required.

Romans 11:24 expands the grafting metaphor, explaining the unnatural grafting of Gentiles — underlining why they should not boast.

Romans 3:27 excludes boasting by the law of faith — the same principle underlying Paul's warning against arrogance in Romans 11.

Romans 4:16 grounds salvation in faith, not works — excluding boasting and showing Gentiles are included by grace, not superiority.

Proverbs 16:18 declares that pride leads to destruction — a fitting background to Paul's warning that boasting invites a fall.

Luke 18:9-11 contrasts the boasting Pharisee with the humble tax collector — the very attitude Paul warns against in Romans 11.

John 10:16 promises 'other sheep' to be brought into one flock — the same inclusion of Gentiles that Paul describes, preventing boasting.

1 Corinthians 10:12 warns those who think they stand to take heed lest they fall — almost identical to Paul's caution against boasting.

Galatians 3:29 declares believers in Christ are Abraham's seed — the basis for being grafted into the root, making boasting inappropriate.

Ephesians 2:19 emphasizes Gentile believers are now fellow citizens, reinforcing the warning not to boast over Israel as outsiders.

In Matthew 26:33, Peter's boastful confidence is followed by his denial — illustrating the same danger of overestimating one's standing.

1 Kings 20:11 warns against boasting before victory — reinforcing the danger of pride in one's position, as Paul cautions the Gentiles.