You Must Never Mistreat A Stranger - Judges 19-21.

Exodus 22:21 “You shall neither mistreat a stranger nor oppress him, for you were strangers in the land of Egypt. 

Judges 19:11-12, 20, 22, 24-25 They were near Jebus, and the day was far spent; and the servant said to his master, “Come, please, and let us turn aside into this city of the Jebusites and lodge in it.” But his master said to him, “We will not turn aside here into a city of foreigners, who are not of the children of Israel; we will go on to Gibeah.” And the old man said, “Peace be with you! However, let all your needs be my responsibility; only do not spend the night in the open square.” As they were enjoying themselves, suddenly certain men of the city, perverted men, surrounded the house and beat on the door. They spoke to the master of the house, the old man, saying, “Bring out the man who came to your house, that we may know him carnally!” Look, here is my virgin daughter and the man’s concubine; let me bring them out now. Humble them, and do with them as you please; but to this man do not do such a vile thing!” But the men would not heed him. So the man took his concubine and brought her out to them. And they knew her and abused her all night until morning; and when the day began to break, they let her go.