Exodus 34:6-7

And when he passed before him, he said: O the Lord, the Lord God, merciful and gracious, patient and of much compassion, and true, Who keepest mercy unto thousands: who takest away iniquity, and wickedness, and sin, and no man of himself is innocent before thee. Who renderest the iniquity of the fathers to the children, and to the grandchildren, unto the third and fourth generation.