And they were mingled among the heathens, and learned their works:

“But they of whose iniquities this Psalm speaks, when they had entered into that temporal land of promise, "destroyed not the heathen, which the Lord commanded them" [Psalm 106:34]; "but were mingled among the heathen, and learned their works" [Psalm 106:35]. "Insomuch that they worshipped their idols, which became to them an offense" [Psalm 106:36]. Their not destroying them, but mingling with them, became to them an offense.”

“But were mingled among the Heathen,.... Not only dwelt among them, but made covenants and contracts, carried on trade and commerce, and intermarried with them, contrary to the express law of God, Deu 7:2. Nor should saints have communion with wicked men, especially in things sinful and superstitious, Co2 6:14. And learned their works; not their civil works and actions, their trades and business, but their idolatrous works; of which a detail is given in the following verses: "evil communications corrupt good manners", Co1 15:33.”