Psalms 103:8-13; Isaiah 43:25, 44:22

The LORD is merciful and gracious, slow to anger and abounding in steadfast love. He will not always chide, nor will he keep his anger forever. He does not deal with us according to our sins, nor repay us according to our iniquities. For as high as the heavens are above the earth, so great is his steadfast love toward those who fear him; as far as the east is from the west, so far does he remove our transgressions from us. As a father shows compassion to his children, so the LORD shows compassion to those who fear him.

I, I am he who blots out your transgressions for my own sake, and I will not remember your sins.

I have blotted out your transgressions like a cloud and your sins like mist; return to me, for I have redeemed you. (ESV)