'Break My Covenant' in the Bible

Then said Yahweh unto Moses, Lo! thou art about to sleep with thy fathers, - and this people will rise up, and go away unchastely after the gods of the foreigners of the land into the midst of whom they are entering, and will forsake me and break my covenant which I solemnised with them.

When I bring them upon the soil which I sware unto their fathers, flowing with milk and honey, and they shall eat and be filled and wax fat, then will they turn away unto other gods and serve them, and despise me, and break my covenant.