Deuteronomy 32:16

But Jeshurun, the people of righteousness, as they are called to remind them of God's loving and honoring plans for their permanent advancement as the just and righteous among the nations of the world, waxed fat, and kicked, like an ox that is fed too well, like a horse that feels his oats, Isaiah 10:27; thou art waxen fat, thou art grown thick, thou art covered with fatness, as Moses, in turning directly to the people, applies the figure; then he forsook God, which made him, deliberately rejecting his Creator, and lightly esteemed the Rock of his salvation, who not only had delivered them from the bondage of Egypt, but wanted to be their Redeemer from all spiritual dangers as well.

They provoked Him to jealousy with strange gods, by forgetting the relation of faithfulness which the covenant laid upon them, with abominations provoked they Him to anger.