The Bible
Joshua 23
Joshua exhorts Israel to be courageous, keep the commandments, love the Lord, and neither marry among nor cleave unto the remnants of the Canaanites who remain in the land—When the children of Israel serve other gods, they will be cursed and dispossessed.
8But cleave unto the Lord your God, as ye have done unto this day.
11Take good heed therefore unto yourselves, that ye love the Lord your God.