||God said, 'Still, your wife Sarah will give birth to a son. You must name him Isaac. I will keep My covenant with him as an eternal treaty, for his descendants after him.
Vayomer Elohim aval Sarah ishtecha yoledet lecha ben vekarata et-shemo Yitschak vahakimoti et-briti ito livrit olam lezar'o acharav.
Yitzchak in Hebrew. Literally, 'He will laugh,' or 'he laughed.'