They joined themselves also unto Baal-peor (see Numbers 25:3). The exact expression used in the Pentateuch is repeated. It signifies a mystic union, such as was supposed to exist between a heathen god and his worshippers, and to be kept up by sacrificial meals and the like.
"Baal-peor"—i.e. "the Lord of Pehor"—is probably identified with Chemosh. And ate the sacrifices of the dead. The corresponding phrase in Numbers (Numbers 25:2) is, "the sacrifices of their gods," who were "dead," as opposed to the true living God.