Carl Friedrich Keil and Franz Delitzsch Old Testament Commentary

Lot went out to them, shut the door behind him to protect his guests, and offered to give his virgin daughters up to them. "Only to these men (האל, an archaism for האלּה rof, occurs also in Gen 19:25; Gen 26:3-4; Lev 18:27, and Deu 4:42; Deu 7:22; Deu 19:11; and אל for אלּה in Ch1 20:8) do nothing, for therefore (viz., to be protected from injury) have they come under the shadow of my roof." In his anxiety, Lot was willing to sacrifice to the sanctity of hospitality his duty as a father, which ought to have been still more sacred, "and committed the sin of seeking to avert sin by sin." Even if he expected that his daughters would suffer no harm, as they were betrothed to Sodomites (Gen 19:14), the offer was a grievous violation of his paternal duty. But this offer only heightened the brutality of the mob. "Stand back" (make way, Isa 49:20), they said; "the man, who came as a foreigner, is always wanting to play the judge" (probably because Lot had frequently reproved them for their licentious conduct, Pe2 2:7, Pe2 2:8): "not will we deal worse with thee than with them." With these words they pressed upon him, and approached the door to break it in. The men inside, that is to say, the angels, then pulled Lot into the house, shut the door, and by miraculous power smote the people without with blindness (סנורים here and Kg2 6:18 for mental blindness, in which the eye sees, but does not see the right object), as a punishment for their utter moral blindness, and an omen of the coming judgment.