This chapter highlights the forthcoming birth of Isaac and the forthcoming death of Sodom. In this contrast between the beginning of life and the end of life, Abraham has opportunity first to be host, then to be intercessor. As host he entertains three men by his home at Mamre (18:1–15). One of these is obviously the Lord (18:1). The other two must be angelic companions, both of whom essentially drop out of the story after verse 9. The number three should not be pressed for any trinitarian significance.

Abraham serves the three visitors a meal and watches while they eat (18:8). The supernatural character of these visitors is evidenced by the fact that they know Abraham is married, and they also know his wife’s name. This probably shocks Abraham. He does not recognize his visitors, but hi…