Exodus 34:6-7

"And the LORD passed by before him, and proclaimed, The LORD, The LORD God, merciful and gracious, long-suffering, and abundant in goodness and truth, Keeping mercy for thousands, forgiving iniquity and transgression and sin, and that will by no means clear the guilty; visiting the iniquity of the fathers upon the children, and upon the children's children, unto the third and to the fourth generation" - Exodus 34:6-7 KJV