Commentaire sur La Genèse 17:5

כי אב המון גוים FOR A FATHER OF A MULTIDUDE OF NATIONS — An acrostic on his name [אב (ר) הם]. But the ר which was previously in his name — denoting that he was the father (chieftain) only of אב (א) רם] ארם] which was his native country (cf. Genesis 21:7 with verse Genesis 21:10 of the same chapter), whilst now he became father of the entire world — nevertheless was not taken out of his name. For we find also, that the 'י in Sarai’s name continued to complain to God that it had been removed from her name when this was changed to Sarah, until it was placed as an additional letter into the name יהושע, as it is said, (Numbers 13:16) “And Moses called Hoshea (הושע) the son of Nun, Joshua (יהושע)” (Genesis Rabbah 47:1).

והיה שמך אברהם, "henceforth you name will be Avraham. Immediately."

ולא יקרא שמך עוד אברם, your name will no longer be Abram, but Abraham. Bereshit Rabbah 44,10 already stated that when Abram cited that he had seen in his horoscope that he would not father any children, G'd agreed with him and told him that he was correct, that as Abram he would not father children but that as Abraham he would. The same would apply to Sarai as compared to Sarah. This Midrash is very difficult since the Torah reports Abram as siring Ishmael, not Abraham!

ולא יקרא עוד את שמך, the word את after the verb in the passive conjugation "yikarey" is used to make something more clear. (the author dealt with this principle in his introduction to דקדוק המלים) Other examples of such a construction are found in Numbers 26,55 וכן יחלק את הארץ, as well as in Deuteronomy 20,8 ולא ימס את אחיו. Our sages say that when a person's name is changed this results in the cancellation of evil decrees that had been issued against such a person. (Rosh Hashanah 16) They point to Avraham and Sarah as proof. Both Avraham and Sarah after having had their names changes had become able to jointly produce Yitzchok.

והיה שמך אברהם, “and your name will be Avraham.” The additional letter ה is from the last letter ה of the Ineffable Name י-ה-ו-ה. This gave Avraham the physical strength to produce offspring. We find that the letterי which had been a part of Sarai’s name, i.e. שרי was divided between Avraham and his wife [they both now had a letter 5=ה instead of Sarai having a letter י =10]. By dividing this letter between them (each receiving the equivalent of 5), Avraham became the carrier of the מרכבה, the terrestrial carriage supporting G’d’s Presence together with Yitzchak and Yaakov who would not have been born without this change of name of both Avram and Sarai.

For even the י of Sarai’s name complained to the Divine Presence ... Rashi is answering the question: ]According to this,] he should have been called אבהם, replacing the ר with a ה. Why was the ר not removed? Rashi answers: So the ר will not complain to Hashem, as did theי of Sarai. And perhaps the reason theי of Sarai was removed was because it was destined to be placed in Yehoshua’s name. Furthermore, the י [which equals 10] remained also with Sarai, as it was divided: half [ה = 5] was given to Sarah, and half to Avraham. But the ר could not have remained in their names [in this way].

ולא יקרא עוד את שמך אברם, “henceforth your name will no longer be called Avram;” anyone still referring to Avraham as Avram will be violating a positive commandment. (Talmud, B’rachot 13)[The underlying reason for this may be that by depriving him of his full name, the caller implies that he was still partially a gentile. This is loosely translated by me for the words לפי שנתלוה עמו גיות, used by the author. Ed.] Nechemyah 9,7 where reference to this name change is made, is no contradiction to what is stated in the Talmud, as it also records what has been written here. The Talmud refers to the difference from Yaakov who was given the additional name Israel, without the name Yaakov having been erased. Seeing that he had been a descendant of Avraham and Yitzchok, the name Yaakov never had a connotation of something connected to paganism which had to be erased. Already Yitzchok’s name never required to be changed.

כי אב המון גויים נתתיך, for the significance of this name change will commence as of this day. The word נתתיך in the past tense means that this process has already commenced. This is why לא יקרא עוד שמך אברם, your name from now on will now longer be Avram, ever. This was a different name change from when Yaakov was accorded the name ישראל. That name was an additional name which did not replace his original name Yaakov. The matter will be explained in due course.

ולא יקרא, people of subsequent generations will never refer to the original names of Avram and Sarai when referring to them, but will refer to them only as Sarah and Avraham. You are to tell all the people you meet that G'd has changed both your names, so that these people will tell others and soon everyone will know about this. As a result, the miracle that I have worked with you both will become public knowledge when you and Sarah will have a baby-son.

Besides, why did the Midrash mention that Sarai did not bear children when Abraham had never even raised the problem of Sarai not having children?

והיה שמך אברהם, “henceforth your name will always be: Avraham.” It is an ancient custom to change someone’s name as a sign that he had received a promotion. We find this with Sarah, Yaakov, Joshua, as well as with Chananyah, Mishael, and Azaryah. (Daniel 1,7)

We must conclude therefore that Abraham already knew at that time or at least surmised that any meaningful seed of his could only be conceived through Sarah because (presumably) whatever he had foreseen in his horoscope applied to himself in conjunction with his wife. G'd confirmed this when He told him that his seed would be known through Isaac. This is why the Midrash included the name Sarah when describing a prophecy primarily directed at Abraham. Abraham realised that the need for Ishmael to be his son was to rid his sperm of any residual contamination of the original serpent. Fathering Ishmael then was not fathering in the true sense of the word.