Genesis 19:21
And he said unto him, See, I have accepted thee concerning this thing also, that I will not overthrow this city, for the which thou hast spoken.
Cross-reference
Genesis 18:24 begins Abraham's intercession for Sodom — Lot's plea here follows that same pattern of negotiating to spare a city from judgment.
Psalm 34:15 promises God's eyes are on the righteous and his ears hear their cry — exactly what happens here as God responds to Lot's desperate plea.
Psalm 145:19 says God fulfills the desire of those who fear him and hears their cry. Lot fears, Lot cries out — God answers by preserving Zoar.
Jeremiah 14:10 says God will not accept Israel because they wander without restraint — a stark contrast to Lot's plea being granted mercy.
Exodus 33:17 uses nearly identical language — 'I will do this thing also' because the petitioner found grace, mirroring Lot's acceptance here.
Psalm 102:17 says God regards the prayer of the destitute. Lot, fleeing destruction, is such a figure — and God hears him, sparing Zoar for his sake.