Exodus 34:6-7

Amplified Bible

⁶ Then the Lord passed by in front of him, and proclaimed, “The Lord, the Lord God, compassionate and gracious, slow to anger, and abounding in lovingkindness and truth (faithfulness); ⁷ keeping mercy and lovingkindness for thousands, forgiving iniquity and transgression and sin; but He will by no means leave the guilty unpunished, visiting (avenging) the iniquity (sin, guilt) of the fathers upon the children and the grandchildren to the third and fourth generations [that is, calling the children to account for the sins of their fathers].”