Exodus 34:7
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 on the children, and on the children's children, to the third and to the fourth generation.
Torrey's Topical Textbook—AKJV

Psalm 51:1
Have mercy on me, O God, according to your loving kindness: according to the multitude of your tender mercies blot out my transgressions.
Torrey's Topical Textbook—AKJV