Gen Genesis, chapter Book of Genesis, chapter 21
And the child grew, and was weaned: and Avraham [exalted father/Fly They Will] made a great feast the [same] day that Yitz’chak [Laughter] was weaned.
And the child grew, and was weaned: and Avraham [exalted father/Fly They Will] made a great feast the [same] day that Yitz’chak [Laughter] was weaned.