Deuteronomy 8:12-14

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