Examining Christ as Messiah

Then God said: "No, Sarah your wife shall bear you a son, and you shall call his name Isaac; I will establish My covenant with him for an everlasting covenant, and with his descendants after him. NKJ Genesis 17:19

... and it was fulfilled...

Abraham was the father of Isaac. Isaac was the father of Jacob. Jacob was the father of Judah and his brothers. NLT Matthew 1:2