Genesis 19:1-29
Two angels arrive at Sodom's gate at evening; Lot welcomes them with the same hospitality verbs Abraham used at Mamre — prostration, foot-washing, unleavened bread — and the city replies with a sentence Judges 19 will quote back word-for-word. Fire and brimstone fall from Yahweh from Yahweh out of the heavens, coining the canonical vocabulary the Psalter abstracts, Ezekiel projects, Jesus quotes, and Revelation deploys six times for the lake of fire. The chapter closes with the formula that closed the Flood: God remembered Abraham, and Lot was sent out from the midst of the Overthrow.
Revelation 17:1-18:24
Revelation 21:23
The Lamb is not called 'light' in Revelation 21:23. He is called 'lamp' — a device that holds and transmits light from another source. John's vocabulary for light, luminaries, and radiance is remarkably varied, and the distinctions are not decorative. They are the theology.