CMIIW, according to the bible, it was Isaac who was supposed sacrifice by Abraham. Pero sa Feast of Sacrifice by our Muslim brothers, si Ishmael naman ang supposedly sacrifice?
Yes. Ishmael is considered by Muslims as the forefather of Arabs.
C. But the Bible mentions that Isaac was to be sacrificed.
M. The Islamic version states that the covenant between God, Abraham, and his only son Ishmael was made and sealed when Ishmael was supposed to be sacrificed. On the very same day, Abraham, Ishmael, and all the men of Abraham's household were circumcised. At that time, Isaac had not even born: Genesis 17:24-27: "And Abraham was ninety years old and nine when he was circumcised in the flesh of his foreskin. And Ishmael his son was thirteen years old, when he was circumcised in the flesh of his foreskin. In the selfsame day was Abraham circumcised, and Ishmael his son. And all the men of his house, born in the house, and bought with money of the stranger, were circumcised with him."
A year later, Isaac was born and circumcised when he was eight days old: Genesis 21:4-5: "And Abraham circumcised his son Isaac being eight days old, as God had commanded him. And Abraham was an hundred years old, when his son Isaac was born unto him." So when the covenant was made and sealed (circumcision and sacrifice) Abraham was ninety-nine and Ishmael was thirteen. Isaac was born a year later, when Abraham was one hundred years old.
As you know, Kedar is a descendent of Ishmael (Genesis 25:13), and Ishmael is the the base for the Family Tree of Prophet Muhammad through Kedar. The followers of Ishmael, Prophet Muhammad and all Muslims, remain faithful until today to this covenant of circumcision. In their five daily prayers, Muslims include the praise of Abraham and his followers with the praise of Muhammad and his followers.
C. But in Genesis 22 it is mentioned that Isaac was to be sacrificed.
M. I know, but you will see the contradiction there. It is mentioned "shine only son Isaac." Shouldn't it be "shine only son Ishmael," when Ishmael was thirteen years old and Isaac had not even been born? When Isaac was born, Abraham had two sons. Because of chauvinism, the name of Ishmael was changed to Isaac in all of Genesis 22. But God has preserved the word "only" to show us what it should have been.
The words "I will multiply thy seed" in Genesis 22:17 was applied earlier to Ishmael in Genesis 16:10. Was not the whole of Genesis 22 applicable to Ishmael then? "I will make him a great nation" has been repeated twice for Ishmael in Genesis 17:20 and Genesis 16:10: "And the angel of the Lord said unto her [Hager]: 'I will multiply thy seed exceedingly, that it shall not be numbered for multitude."'
Genesis 17:20: "And as for Ishmael, I have heard thee. Behold, I have blessed him, and will make him fruitful, and will multiply him exceedingly. Twelve princes shall he beget, and I will make him a great nation."
Genesis 21:13: "And also of the son of the bondwoman will I make a nation, because he is thy seed."
Genesis 21:18: "Arise, lift up the lad [Ishmael], and hold him in shine hand, for I will make him a great nation."
Deuteronomy 21:15-17: "If a man have two wives, one beloved and another hated, and they have born him children, both the beloved and the hated; and if the firstborn son be hers that was hated: Then it shall be, when he maketh his sons to inherit that which he hash, that he may not make the son of the beloved firstborn before the son of the hated, which is indeed the firstborn: But he shall acknowledge the son of the hated for the firstborn, by giving him a double portion of all that he hash: for he is the beginning of the strength; the right of the firstborn is his." Islam does not deny God's blessings on Isaac and his descendants, but the son of promise is Ishmael, from whom arose Muhammad as the seal of the prophets.
source:
http://www.islam101.com/religions/christianity/sacrifice.htm