Komentaryo sa Genesis 49:3: Rashi, Chizkuni, Da'at Zekenim & Ramban

וראשית אוני THE BEGINNING OF MY VIGOR — That is the first drop [of semen], as he had not experienced a seminal emission from all of his days [until that time] (Genesis Rabbah 98:4).

וראשית אוני, “and the first product of my virility.” Even though we have a tradition that a woman never conceives as a result of the first time she has engaged in sexual intercourse, it is possible to achieve such conception by means of what is called: מעיכה, “squeezing,” in the Talmud tractate Yevamot, folio 34.[It is quite difficult to accept this interpretation as the Torah makes plain that Leah did not get pregnant from the first time she slept with Yaakov, seeing that in Genesis 29,31 it states clearly that G-d helped her get pregnant when He observed that Yaakov “hated” her. Clearly this was not before the first night. Ed.]

ראובן בכורי אתה, Reuven you, who are my firstborn,” and who should have received a double share of my inheritance; and you who should also have shouldered the yoke of being the priest among your siblings, and from whom eventually the first King of the Israelites should have been crowned, (in accordance with Chronicles II 21,3) “and the title of Royalty he gave to Yehoram for he was the firstborn,” you will not enjoy all this as it has been transferred to Joseph, and the priesthood to Levi, and the Royalty to Yehudah, all because you have been as unstable as water, as a kettle that boils over and spills its contents.” (Compare Chronicles I 5,1) As a result, the only privilege a firstborn enjoys that you still possess is the hollow title of having been the firstborn of my sons. In this respect you are comparable to water, the first physical element in the universe. You are the original, (oldest) of the people that make up the Israelite nation, the 12 tribes.” Water is insubstantial; it cannot be poured out completely, as opposed to something dry which can be emptied without the loss of any part of it. In the Talmud, tractate Shabbat folio 55, where the meaning of the word פחז in our verse is discussed by different scholars, [there is a lengthy debate about what constituted the sin of a number of illustrious people such as Reuven, the sons of High Priest Eli, Solomon, Yoash, Pinchos, David, King Yoshia, and others Ed.] each offering a different opinion; the conclusion arrived at is that the scholars of the Mishnah agreed to disagree. The common denominator of their discussion is that the text describing their respective sins cannot be understood at its face value but is a metaphor describing a character weakness on the occasion. (B’reshit Rabbah 99,6)