Psalm 106:35

Verse 35. But were mingled among the heathen, and learned their works. It was not the wilderness which caused Israel's sins; they were just as disobedient when settled in the land of promise. They found evil company, and delighted in it. Those whom they should have destroyed they made their friends. Having enough faults of their own, they were yet ready to go to school to the filthy Canaanites, and educate themselves still more in the arts of iniquity. It was certain that they could learn no good from men whom the Lord had condemned to utter destruction. Few would wish to go to the condemned cell for learning, yet Israel sat at the feet of accursed Canaan, and rose up proficient in every abomination. This, too, is a grievous but common error among professors: they court worldly company and copy worldly fashions, and yet it is their calling to bear witness against these things. None can tell what evil has come of the folly of worldly conformity.