In 1 Corinthians 6:18, Paul commands fleeing sexual immorality — here he reinforces it with a historical warning of deadly consequence.

1 Corinthians 5:11 applies the same concern for sexual purity to church discipline — warns against associating with those who persist in such sin.

Numbers 25:1-9 recounts the exact event Paul cites: Israel's sexual immorality and idolatry at Baal Peor, resulting in a plague that killed 24,000.

Revelation 2:14 also references Balaam's teaching that led Israel into sexual immorality at Baal Peor — another NT warning from the same event.

In Numbers 25:9, the plague killed 24,000 — Paul cites this event with a slightly different number (23,000), emphasizing the severity of sexual sin.

Joshua 22:17 mentions the sin of Peor as a past lesson — the same incident Paul warns against repeating.

Psalm 106:29 poetically describes the same event: Israel's deeds provoked God, and a plague broke out — echoing the judgment Paul warns about.