Deuteronomy 8:11-14

Beware that thou forget not the LORD thy God, in not keeping his commandments, and his judgments, and his statutes, which I command thee this day:

Lest [when] thou hast eaten and art full, and hast built goodly houses, and dwelt [therein];

And [when] thy herds and thy flocks multiply, and thy silver and thy gold is multiplied, and all that thou hast is multiplied;

Then thine heart be lifted up, and thou forget the LORD thy God, which brought thee forth out of the land of Egypt, from the house of bondage;