Peor
The heresy of Peor is an event related in the Torah at Numbers 25:1–15. Later biblical references to the event occur in Numbers 25:18 and 31:16, Deuteronomy 4:3, Joshua 22:17, Hosea 9:10; Psalm 106:28.
New Testament references are found in 1 Corinthians 10:8 and Revelation 2:14. It is connected to the error of Balaam when he ascends the mountain of Pe‘or and therefore the Nicolaitans.
The Israelites become involved with a form of whoredom and national adultery.