As I was reflecting upon the fascinating chapter 17 of Genesis, where God first introduces the covenant of circumcision, I realized that the very next chapter introduces even more:
Genesis 17:26 That very day Abraham and his son Ishmael were circumcised. 27 And all the men of his house, were circumcised with him. 18:1 And the Lord appeared to him as he sat at the door of his tent in the heat of the day. 2 He lifted up his eyes and looked, and behold, three men were standing in front of him. When he saw them, he ran from the tent door to meet them and bowed himself to the earth 3 and said, “O Lord, if I have found favor in your sight, do not pass by your servant. 4 Let a little water be brought, and wash your feet, and rest yourselves under the tree, 5 while I bring a morsel of 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.”
With the chapter breaks, we generally don't read Genesis 17 in context with Genesis 18, but clearly there is a connection. In the very first words of ch 18, we see Abraham was most likely recovering from circumcision the day(s) prior, mentioned in the closing of ch 17. What we see is that immediately after getting circumcised, Abraham has a mysterious visit from three men, which he welcomes into his home and has a washing of feet and banquet. As with my other OT foreshadowing posts (e.g. here), we should be looking for deeper spiritual lessons when we see 'strange' things happen in the OT. In this case, I believe the Catholic tradition would happily see the New Testament Sacraments hidden here. Following our baptism, we immediately welcome the Holy Trinity into our life, and this sets us up for receiving the Eucharist and washing of the disciples feet. It is well known that Genesis 18 is a foreshadowing of the Trinity, and I'm sure there are other images here that I'm missing, but I've never seen anyone mention the circumcision/baptism connection before, though I'm sure others have.
After Abraham welcomes the "three men",
he is told Sarah will miraculously conceive
