God replied: Even so, your wife Sarah is to bear you a son, and you shall call him Isaac. It is with him that I will maintain my covenant as an everlasting covenant and with his descendants after him.
One of them said, “I will return to you about this time next year, and Sarah will then have a son.” Sarah was listening at the entrance of the tent, just behind him.
Then he blessed them with these words: “May the God in whose presence my fathers Abraham and Isaac walked, The God who has been my shepherd from my birth to this day,
I am the God of your father, he continued, the God of Abraham, the God of Isaac, and the God of Jacob. Moses hid his face, for he was afraid to look at God. The Call and Commission of Moses.