Allah says in Qur'an:
We saved him and all his family, except for an old woman who behind.“ [26:170-171]
Allah has given examples of disbelievers: the wives of Nuh [Noah] and Lut [Lot] who married two of Our righteous servants, but betrayed them. [66:10]
Lut A.S heard of the strangers, he felt distressed and wondered how he could convince them to bypass the towns of Sodom and continue on their travels.
"Indeed, you are people unknown." (Qur’an 15:62), Lut A.S said to this visitors, thus giving them an indirect hint of what they might expect in his town.
His guests showed no trace of fear or concern.