God said, “No! I said that your wife Sarah will have a son. You will name him Isaac. [100] I will make my agreement with him. That agreement will be an agreement that continues forever with all his descendants. [101]
But the angel said to him, “Zechariah, don’t be afraid. Your prayer has been heard by God. Your wife, Elizabeth, will give birth to a baby boy. You must name him John.
Abraham’s son from the slave woman was born in the normal human way. But the son from the free woman was born because of the promise \{God made to Abraham\}.
Now, in Christ, there is no difference between Jew and Greek (non-Jew). There is no difference between slaves and free people. There is no difference between male and female. You are all the same in Christ Jesus.