By the time he offered his daughters, Lot likely realized that his guests were messengers from God, and he may have reasoned that God could protect his daughters as He had protected his aunt Sarah in Egypt.
ومن المرجح انه ادرك ،‏ حين عرض عليهم ابنتيه ،‏ ان ضيفَيه رسولان من الله .‏ وربما فكّر ان الله قادر على حماية ابنتيه كما حمى امرأة عمه سارة في مصر .‏