'God of Their Fathers' in the Bible

And they will transgress against the God of their fathers, and they will commit fornication after the gods of the peoples of the land, which God destroyed from before them.

And David will say to all the convocation, Praise ye now Jehovah your God. And all the convocation will praise to Jehovah the God of their fathers, and they will bow down and worship to God and the king.