And he divided them at night in the way; a part were to engage with the kings, and a part were hidden to smite the firstborn of Egypt. And he arose, he and his servants, and smote them, and pursued them which remained of them unto (the place) of the memorial of sin which was to be in Dan, from the north of Darmesek.
Abram's Night Attack and the Memorial of Sin at Dan
Targum Pseudo-Jonathan on Genesis 14:15