Deuteronomy 8:10, 19
Deuteronomy 8:10 NASB1995
When you have eaten and are satisfied, you shall bless the LORD your God for the good land which He has given you.
Deuteronomy 8:19 NASB1995
It shall come about if you ever forget the LORD your God and go after other gods and serve them and worship them, I testify against you today that you will surely perish.