'Forgotten' in the Bible

My people are destroyed for lack of knowledge. Because you have rejected knowledge, I will also reject you, that you may be no priest to me. Because you have forgotten your God's law, I will also forget your children.

For Israel has forgotten his Maker and built palaces; and Judah has multiplied fortified cities; but I will send a fire on his cities, and it will devour its fortresses."

According to their pasture, so were they filled; they were filled, and their heart was exalted. Therefore they have forgotten me.