Genesis 17:19

19God said, “No, but aSarah your wife shall bear you a son, and you shall call his name bIsaac.
 Isaac means he laughs
I will establish my covenant with him as an everlasting covenant for his offspring after him.

Genesis 17:21

21But dI will establish my covenant with Isaac, ewhom Sarah shall bear to you at this time next year.”

Genesis 18:10

10The Lord said, “I will surely return to you fabout this time next year, and gSarah your wife shall have a son.” And Sarah was listening at the tent door behind him.

Genesis 18:14

14 hIs anything too hard
Or wonderful
for the Lord? jAt the appointed time I will return to you, about this time next year, and Sarah shall have a son.”

Romans 9:9

9For this is what the promise said: kAbout this time next year I will return, and Sarah shall have a son.”
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