“Behold now, I have two daughters which have not known man; let me, I pray you, bring them out unto you, and do ye to them as is good in your eyes: only unto these men do nothing; for therefore came they under the shadow of my roof.” (KJV)

This seems fairly explicit to me: offering his two virgin daughters in place of the two angels - to do what?

As I understand it, “know” is a euphemism for sex introduced by the KJV; I don’t read Hebrew, so I can’t check the original text, but if this is the case, and given the above verse, it seems likely.

On the other hand, I don’t think it would be inconsistent with Jesus’ teachings to ignore the Old Testament entirely (I seem to recall a passage in which he claimed that the only important commandments were “love God” and “love thy neighbour…”).