181 Now the Lord came to him by the holy tree of Mamre, when he was seated in the doorway of his tent in the middle of the day; 2 And lifting up his eyes, he saw three men before him; and seeing them, he went quickly to them from the door of the tent, and went down on his face to the earth;
Matthew Henry's Commentary on Genesis 18:1-2
Commentary on Genesis 18:1-8
(Read Genesis 18:1-8)
Abraham was waiting to entertain any weary traveller, for inns were not to be met with as among us. While Abraham was thus sitting, he saw three men coming. These were three heavenly beings in human bodies. Some think they were all created angels; others, that one of them was the Son of God, the Angel of the covenant. Washing the feet is customary in those hot climates, where only sandals are worn. We should not be forgetful to entertain strangers, for thereby some have entertained angels unawares, Revelation 3:20.