Numbers 25:3

25:3 When Israel joined themselves to Baal-peor, the anger of the Lord flared up against Israel.

Numbers 31:29

31:29 You are to take it from their half-share and give it to Eleazar the priest for a raised offering to the Lord.

tn The verb is “yoked” to Baal-peor. The word is unusual, and may suggest the physical, ritual participation described below. It certainly shows that they acknowledge the reality of the local god.

sn The evidence indicates that Moab was part of the very corrupt Canaanite world, a world that was given over to the fertility ritual of the times.