Genesis 17:21 But my covenant will I establish with Isaac, which Sarah shall bear unto thee at this set time in the next year. 10 I MC VC

Genesis 18:10 And he said, I will certainly return unto thee according to the time of life; and, lo, Sarah thy wife shall have a son. And Sarah heard it in the tent door, which was behind him. 10 I MC VC

Genesis 18:14 Is any thing too hard for the Lord? At the time appointed I will return unto thee, according to the time of life, and Sarah shall have a son. 16 I MC VC