Bible Verses About Ingratitude to God: Warnings against

Be careful not to forget the LORD your God by failing to keep His commandments and ordinances and statutes, which I am giving you this day.

Otherwise, when you eat and are satisfied, when you build fine houses in which to dwell,

and when your herds and flocks grow large and your silver and gold increase and all that you have is multiplied,

then your heart will become proud, and you will forget the LORD your God who brought you out of the land of Egypt, out of the house of slavery.