Exodus 34:6
5 The Lord descended in the cloud and stood with him there and proclaimed the Lord by name. 6 The Lord passed by before him and proclaimed: “The Lord, the Lord, the compassionate and gracious God, slow to anger, and abounding in loyal love and faithfulness, 7 keeping loyal love for thousands, forgiving iniquity and transgression and sin. But he by no means leaves the guilty unpunished, responding to the transgression of fathers by dealing with children and children’s children, to the third and fourth generation.” 8 Moses quickly bowed to the ground and worshiped 9 and said, “If now I have found favor in your sight, O Lord, let my Lord go among us, for we are a stiff-necked people; pardon our iniquity and our sin, and take us for your inheritance.”
Numbers 14:18
17 So now, let the power of my Lord be great, just as you have said, 18 ‘The Lord is slow to anger and abounding in loyal love, forgiving iniquity and transgression, but by no means clearing the guilty, visiting the iniquity of the fathers on the children until the third and fourth generations.’ 19 Please forgive the iniquity of this people according to your great loyal love, just as you have forgiven this people from Egypt even until now.” 20 Then the Lord said, “I have forgiven them as you asked.
Notes and References
"... By front-loading the Tetragrammaton, Moses emphasized that YHWH’s previous onomastic ascription could unravel. The nations that had heard of YHWH’s power in the plagues and the Red Sea deliverance would now ascribe impotency, if not treachery, to the name YHWH if he chose to annihilate Israel in his wrath. Moses urged YHWH to preserve his reputation, using the Divine Name Proclamation (DNP) to remind him that forgiveness was fundamental to his character. Numbers 14:18 lacks some words that occur in Exodus 34:6–7. These omissions do not indicate that the DNP originally followed the wording of Numbers 14:18. Rather, the text distills the DNP (or traditions related to it) to bring attention to YHWH’s climactic revelation of his forgiveness. On the basis of his great kindness, Moses asked YHWH to forgive. ..."
Surls, Austin Making Sense of the Divine Name in the Book of Exodus: From Etymology to Literary Onomastics (pp. 166-167) Eisenbrauns, 2017