Since its beginnings Islam's finest scholars have debated which son Abraham was commanded to sacrifice, yet both Judaism and Christianity host no such discussion. The reason for this is simple, the Torah names Isaac multiple times, while Quran keeps the boy's identity secret. read more
EDIT: I’ve had it pointed out that part of my answer below is incorrect. It’s still true of course that none of Abraham’s sons were sacrificed, that the Quran recongises his two main sons, etc. But according to the Quran it was Ishmael, not Isaac, that was sacrificed. In this regard it contradicts the Bible. original answer below: None. read more
The Islamic holy day Eid al-Adha is celebrated in memory of the sacrifice of Abraham, and each able bodied Muslim is supposed to perform the pilgrimage to pay homage at the Ka‘bah (Arabic: كَـعـبَـة ) in the Hijazi city of Mecca, which was built by Abraham and his son Ishmael as the first house of worship on earth. read more
In the verses of Genesis 22, God commands Abraham to sacrifice his only son. As all scholars of Islam, Judaism and Christianity agree, Ishmael was born before Isaac. From this, it would not be fit to call Isaac the only son of Abraham. read more