4 Let a little water be brought, and wash your feet, and rest yourselves under the tree. 5 Let me bring a little bread, that you may refresh yourselves, and after that you may pass on-since you have come to your servant." So they said, "Do as you have said." 6 And Abraham hastened into the tent to Sarah, and said, "Make ready quickly three measures of choice flour, knead it, and make cakes." 7 Abraham ran to the herd, and took a calf, tender and good, and gave it to the servant, who hastened to prepare it. 8 Then he took curds and milk and the calf that he had prepared, and set it before them; and he stood by them under the tree while they ate.
Matthew Henry's Commentary on Genesis 18:4-8
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.