Charles Ellicott Commentary Numbers 25:2

"for they called the people unto the sacrifices of their gods; and the people did eat, and bowed down to their gods." — Numbers 25:2 (ASV)

And they called the people ... — The Moabitish women invited the Israelites to their sacrificial feasts, which were celebrated in honour of Baal-peor, who was worshipped in the city of Beth-peor (Deuteronomy 3:29). He is supposed to be identical with Chemosh, the Moabitish god of war.