Genesis 18:28

Peradventure there shall lack five of the fifty righteous: wilt thou destroy all the city for lack of five? And he said, If I find there forty and five, I will not destroy it.

Cross-reference

In Genesis 18:26, God sets the threshold at fifty righteous. Abraham's request here tests whether the number can be lowered to forty-five.

In Genesis 18:29, Abraham continues the same negotiation, lowering his number from forty-five to forty. A direct continuation of this dialogue.

In Numbers 14:17-19, Moses intercedes for Israel like Abraham does for Sodom, appealing to God's mercy.

Job 23:3 Contrast

Job 23:3 laments not knowing where to find God, while Abraham is already in dialogue with Him, showing contrast.