Bible Verses About Ingratitude to God: Saul

Sh'mu'el then said, "You may be small in your own sight, but you are head of the tribes of Isra'el -ADONAI anointed you king over Isra'el!

Now ADONAI sent you on a mission and told you, 'Go and completely destroy 'Amalek, those sinners; keep making war on them until they have been exterminated.

Why did you seize the spoil instead of paying attention to what ADONAI said? From ADONAI's viewpoint, you have done an evil thing."