Let’s begin with the part dealing with Ishmael first. We see in verse 9 that both Isaac and Ishmael buried their Abraham, what does this tell us? Well, for one, we can confirm that there was NEVER a time during Abraham’s life when Isaac was Abraham’s firstborn, NOR was there EVER a time during Abraham’s life when Isaac was to Abraham “your son, your only son”. Those terms could ONLY be used to describe Ishmael, Abraham’s firstborn son. But we are not here to speculate who changed THAT story!
In Bereishsis/ Genesis, the notes for verse 17. Ishmael’s age is given because it assists in calculations with respect to [dating the various events which occurred during the life of] Jacob (Rashi [Yevamos 64a]) [and this is footnoted, which reads in part: 1 Rashi goes on to explain that we calculate from Ishmael’s age at his death that Jacob attended the Academy of Eber for fourteen years from the time he left his fathers’ house to the time he arrived at Laban’s house (as explained in Megillah 17a); to which we have the sub footnote: [Briefly, according to the data cited in Megillah 17a, when Jacob stood before Pharaoh he should have been 116 years old, yet Jacob himself gave his age as 130(Gen. 47:9). The discrepancy is explained by the fact that he spent fourteen years in the Academy of Eber after leaving his fathers’ house.]
According to Ramban [to this verse but cited in v12] Ishmael’s age is noted here because he repented and the age of the righteous is generally stated. Rashbam holds that it is recorded as a mark of honor for Abraham. Since the torah had mentioned Abraham’s age at Ishmael’s birth, and Ishmael’s age when he underwent circumcision. It now concludes by mentioning his lifespan. Further on we read Rashi comments that…is only mentioned in the case of righteous people [such as Ishmael, since he repented…]…
According to R’ Bachya it [the phrase “and was gathered unto his people”] is based the use in our verse of both expired and died – which refer to the death only of the righteous – and the Sages said that Ishmael repented of his evil ways.
So whatever ill will the Jews may harbor against Ishmael [that they say he had “evil” ways], he is cleared of any error and claimed by JEWISH Sages to be “of the righteous!” note the similarity in regards to Abraham in verse 8 And Abraham expired, and died in a good old age, an old man, and full of years; and was gathered to his people. Compared to of Ishmael in verse 17 And these are the years of the life of Ishmael, a hundred and thirty and seven years; and he expired and died; and was gathered unto his people.
Also, consider that we saw in the notes to Genesis 16 “that Abraham and Sarah were still heartbroken at their barrenness, for without heirs they would not be able to continue the mission of Bringing God’s teaching to mankind. Recognizing that it was she who was infertile, Sarah suggested that Abraham marry her maidservant Hagar, and, if a son were born, Sarah would raise him, so that he would be considered her adopted child.” This tells us that it was the intent of Abraham and Sarah to raise Ishmael “so that he would be considered her adopted child!” it stands within reason but our case doesn’t rely solely on it, that in their job of “parenting” Ishmael [up until the birth of Isaac] that they would have sent him to the “Academy of Eber in Jerusalem” for proper training in the “mission of Bringing God’s teaching to mankind.” So from Ishmael's beginning and again at the end of his life we can put him in the category of the “sons” of Eber, and thus an Hebrew.
We will take another look at Hagar, just in case any see her as a reason to disqualify Ishmael as one of the “righteous.” Let’s look again at 25:1, And Abraham took another wife, and her name was Keturah.
The notes say that there is a Hebrew word in the phrase which means “again” which would literally mean: And Abraham again took a wife, which is interpreted by the Sages to intimate the Abraham remarried to before: Hagar.
Keturah is Hagar, who received this name because her deeds were as beautiful as incense [ketores]; also because she remained chaste…from the time she had separated from Abraham (Midrash; Rashi).
In 21:14 Rashi comments that Hagar reverted to the idolatry of her father’s house. How then does he now call her action “beautiful as incense?” – Rather, when she was expelled from Abraham’s household she felt forsaken even by his God and she intended to revert to her idolatrous ways. But when the miracle occurred at the well, she repented (Gur Aryeh).
The Zohar similarly comments that although she had relapsed into her ancestral idolatry, she later repented and changed her name, after which Abraham sent for and married her. From this we see that a change of name males atonement for guilt, for she made this change of name symbolic of her change of behavior.
[Immediately following this there is a note discussing some Hebrew phraseology which…denotes that Keturah was righteous and fit for Abraham.]
Although Hagar/Keturah was a first generation Egyptian and hence forbidden in marriage [see Deut.32: 9], nevertheless, since his first marriage to her was with God’s sanction, she remained permissible to him for remarriage as well. Furthermore, the Midrash [Bereishis Rabbah 60:4] specifically states that Abraham married Keturah/Hagar by Divine Command (Tur).
Targum Yonasan renders the verse: and Abraham took a wife, and her name was Keturah; she is Hagar who had been bound to him…from the beginning.
So we here additionally that if there were any ill feelings on the part of the Jews for Hagar, regardless of whether or not she is Keturah, the Jewish sources claim that not only was Hagar “permissible” for Abraham, but they actually speak quite highly of her considering the circumstances. Based on that I would reject any effort to disqualify Ishmael as a “son of Eber” based upon anything said about him or his mother, Hagar.
Quote:
Let us return to matter relating to Israel’s uncle Ishmael. In chapter 17, Chumash, God is speaking to Abraham about their covenant and promising a son through Sarah, Abraham interrupts God:
v18 And Abraham said to God, “Oh that Ishmael might live before You!” God said, “Nonetheless, your wife Sarah will bear you a son and you shall call his name Isaac…v 20 But regarding Ishmael I have heard you; I have blessed him, will make him fruitful, and will increase him most exceedingly; he will beget twelve princes and I will make him into a great nation…”
Part of the notes for this verse read: “We see from the prophecy in this verse, that 2337 years elapsed before the Arabs, Ishmael’s descendants, became a great nation [with the rise of Islam in the 7th Century C.E.]…Throughout this period, Ishmael hoped anxiously, until the promise was fulfilled and they dominated the world. We the descendants of Isaac, for whom the fulfillment of the promises made to us is delayed due to our sins…should surely anticipate the fulfillment of God’s promises and not despair” (R’ Bachya citing R’ Chananel).
Bereishsis/ Genesis adds: R’ Bachya cites R’ Chananel’s comment on this verse: We see from this prophecy [in the year 2047 from Creation, when Abraham was ninety-nine], 2337 years elapsed before the Arabs, Ishmael’s descendants, became a great nation. [This would correspond to 624 C.E, two years after the H(ijra)!…] to be honest, I totally missed the hijra comment the first time I read this because I wasn’t a Muslim and I didn’t know what they meant by hegira! But we do have one prophecy that at least according to the Jews, puts Islam as an Old Testament prophecy!