20:15. And said: The land is before you, dwell wheresoever it shall please thee.
20:16. And to Sara he said: Behold I have given thy brother a thousand pieces of silver, this shall serve thee for a covering of thy eyes to all that are with thee, and whithersoever thou shalt go: and remember thou wast taken.
20:17. And when Abraham prayed, God healed Abimelech and his wife, and his handmaids, and they bore children:
20:18. For the Lord had closed up every womb of the house of Abimelech, on account of Sara, Abraham’s wife.
Genesis Chapter 21
Isaac is born. Agar and Ismael are cast forth.
21:1. And the Lord visited Sara, as he had promised: and fulfilled what he had spoken.
21:2. And she conceived and bore a son in her old age, at the time that God had foretold her.
21:3. And Abraham called the name of his son, whom Sara bore him, Isaac.
Isaac.... This word signifies laughter.