Re: why was the kaba made?
The lamb sacrifice story is based on the relationship Prophet Abraham/Ibrahim had with his younger son Ishmael/Ismail (Peace be upon them). Jewish traditions severely downplay the role of Ismail (and his mother Hager/Hajirah), and only focus on Abraham's elder son, Isaac/Ishaq (Peace be upon him) as the jewish nation is based on the family tree from Isaac.