An important Fact that I would like you to observe now is how the scribes switched names to illegitimize Ishmael.

The scribes and commentators say that Ishmael is not a legitimate son of Abraham and therefore the covenant was only with Isaac.

Now I will show you in the Scripture that it was Really Ishmael who was to be sacrificed and the covenant was first done with Ishmael and Ishmael was a legitimate son of Abraham even after Abraham's death.

1. The covenant was first made with Abraham and Ishmael;

Genesis 17:10 This [is] my covenant, which ye shall keep, between me and you and thy seed after thee; Every man child among you shall be circumcised.

Genesis 17:13 He that is born in thy house, and he that is bought with thy money, must needs be circumcised: and my covenant shall be in your flesh for an everlasting covenant.

Note:-

2. It was really Ishmael and not Isaac who was going to be sacrificed and the Jewish scribes because of vanity, switched the names;

Genesis 16:16 "and Abram [is] a son of eighty and six years in Hagar's bearing Ishmael to Abram."

Who's son? Abraham's "son". Now as far as the sacrifice is concerned, Genesis 17:24 "Abraham was ninety-nine years old when he was circumcised in the flesh of his foreskin."

That makes Abraham's son Ishmael 13, how old is Isaac at this time? Genesis 21:5 "Abraham was a hundred years old when his son Isaac was born to him."

that means during the circumcision/sacrifice, Abraham's only "begotten" son is Ishmael and not Isaac as the Bible says.

KJV Hebrews 11:17 "By faith Abraham, when he was tried, offered up Isaac: and he that had received the promises offered up his only begotten son,"

Therefore we see that Isaac was not the only son, as a matter of fact, Isaac was not even born yet and Abraham's Only begotten son was Ishmael. Therefore further confirming the Legitimacy of Prophet Muhammad which God says I will make great Nations from Ishmael.

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.

3. Ishmael was a legitimate son even after Abraham died;

Genesis 16:3 "And Sarai Abram's wife took Hagar her maid the Egyptian, after Abram had dwelt ten years in the land of Canaan, and gave her to her husband Abram to be his wife."

Genesis 25:9 "Then his sons Isaac and Ishmael buried him (Abraham) in *the cave of Machpelah, in the field of Ephron the son of Zohar the Hittite, facing Mamre,"

Genesis 25:12 "Now these are the records of the generations of *Ishmael, Abraham's son, whom Hagar the Egyptian, Sarah's maid, bore to Abraham;" 

An important Fact that I would like you to observe now is how the scribes switched names to illegitimize Ishmael.

The scribes and commentators say that Ishmael is not a legitimate son of Abraham and therefore the covenant was only with Isaac.

Now I will show you in the Scripture that it was Really Ishmael who was to be sacrificed and the covenant was first done with Ishmael and Ishmael was a legitimate son of Abraham even after Abraham's death.

1. The covenant was first made with Abraham and Ishmael;

Genesis 17:10 This [is] my covenant, which ye shall keep, between me and you and thy seed after thee; Every man child among you shall be circumcised.

Genesis 17:13 He that is born in thy house, and he that is bought with thy money, must needs be circumcised: and my covenant shall be in your flesh for an everlasting covenant.

Note:-

2. It was really Ishmael and not Isaac who was going to be sacrificed and the Jewish scribes because of vanity, switched the names;

Genesis 16:16 "and Abram [is] a son of eighty and six years in Hagar's bearing Ishmael to Abram."

Who's son? Abraham's "son". Now as far as the sacrifice is concerned, Genesis 17:24 "Abraham was ninety-nine years old when he was circumcised in the flesh of his foreskin."

That makes Abraham's son Ishmael 13, how old is Isaac at this time? Genesis 21:5 "Abraham was a hundred years old when his son Isaac was born to him."

that means during the circumcision/sacrifice, Abraham's only "begotten" son is Ishmael and not Isaac as the Bible says.

KJV Hebrews 11:17 "By faith Abraham, when he was tried, offered up Isaac: and he that had received the promises offered up his only begotten son,"

Therefore we see that Isaac was not the only son, as a matter of fact, Isaac was not even born yet and Abraham's Only begotten son was Ishmael. Therefore further confirming the Legitimacy of Prophet Muhammad which God says I will make great Nations from Ishmael.

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.

3. Ishmael was a legitimate son even after Abraham died;

Genesis 16:3 "And Sarai Abram's wife took Hagar her maid the Egyptian, after Abram had dwelt ten years in the land of Canaan, and gave her to her husband Abram to be his wife."

Genesis 25:9 "Then his sons Isaac and Ishmael buried him (Abraham) in *the cave of Machpelah, in the field of Ephron the son of Zohar the Hittite, facing Mamre,"

Genesis 25:12 "Now these are the records of the generations of *Ishmael, Abraham's son, whom Hagar the Egyptian, Sarah's maid, bore to Abraham;"