Genesis 19:1
And there came two angels to Sodom at even; and Lot sat in the gate of Sodom: and Lot seeing them rose up to meet them; and he bowed himself with his face toward the ground;
Cross-reference
In 18:1-3, Abraham greets three visitors with a bow and offers rest. Lot's bow and invitation in 19:1 closely mirrors his uncle's hospitality.
In 18:2, Abraham bows to the ground greeting visitors. Lot's bow in 19:1 echoes the same respectful gesture toward the same divine visitors.
In 18:22, the men turn and head toward Sodom — 19:1 narrates their arrival there. This is direct narrative continuation from the same scene.
Genesis 13:12 explains Lot settled near Sodom after parting from Abraham. This is backstory for why Lot is at Sodom's gate in 19:1.
Hebrews 13:2 warns to show hospitality — some have entertained angels without knowing. Lot's welcome of the disguised angels fits this theme.
Matthew 25:35 identifies welcoming strangers with serving Christ — Lot's hospitality to unknown visitors exemplifies this righteous act.
Romans 12:13 commands believers to practice hospitality — Lot's eager welcome of strangers embodies this very apostolic exhortation.