הוּא הָיָה אוֹמֵר, בֶּן חָמֵשׁ שָׁנִים לַמִּקְרָא, בֶּן עֶשֶׂר לַמִּשְׁנָה, בֶּן שְׁלשׁ עֶשְׂרֵה לַמִּצְוֹת, בֶּן חֲמֵשׁ עֶשְׂרֵה לַתַּלְמוּד, בֶּן שְׁמֹנֶה עֶשְׂרֵה לַחֻפָּה, בֶּן עֶשְׂרִים לִרְדֹּף, בֶּן שְׁלשִׁים לַכֹּחַ, בֶּן אַרְבָּעִים לַבִּינָה, בֶּן חֲמִשִּׁים לָעֵצָה, בֶּן שִׁשִּׁים לַזִּקְנָה, בֶּן שִׁבְעִים לַשֵּׂיבָה, בֶּן שְׁמֹנִים לַגְּבוּרָה, בֶּן תִּשְׁעִים לָשׁוּחַ, בֶּן מֵאָה כְּאִלּוּ מֵת וְעָבַר וּבָטֵל מִן הָעוֹלָם:
He used to say: At five years of age the study of Scripture; At ten the study of Mishnah; At thirteen subject to the commandments; At fifteen the study of Talmud; At eighteen the bridal canopy; At twenty for pursuit [of livelihood]; At thirty the peak of strength; At forty wisdom; At fifty able to give counsel; At sixty old age; At seventy fullness of years; At eighty the age of “strength”; At ninety a bent body; At one hundred, as good as dead and gone completely out of the world.
כי בשש משה [AND WHEN THE PEOPLE SAW] THAT MOSES DELAYED LONG — Understand (בשש as the Targum does, as an expression denoting “lateness”.. Similar are: (Judges 5:28) “[Why is] his chariot so long (בשש) [in coming]?”; (Judges 3:25) “And they waited until it was late (עד בוש)”. For when Moses ascended the mountain he said to them (to the Israelites): at the end of a period of forty days (i. e. on the fortieth day) I shall return during the first six hours of the day (before noon). They thought that the day on which he ascended the mountain (the seventh of Sivan) was to be included in this number (thus — Sivan having 30 days — he was expected back before noon on the sixteenth of Tammuz). In fact, however, he had said to them “after forty days” meaning complete days — forty days, each day together with its night that precedes it — (as is the customary Jewish reckoning; cf. Genesis 1:5: ויהי ערב ויהי בקר). Now, as regards the day of this ascent, its night was not part of it that it can be reckoned as a complete day, for he ascended on the seventh of Sivan early in the morning (cf. Rashi on Exodus 19:3); it follows therefore that the fortieth day really fell on the seventeenth of Tammuz and not as the people had believed on the sixteenth. On the sixteenth of Tammuz Satan came and threw the world into confusion, giving it the appearance of darkness, gloom and disorder that people should say: “Surely Moses is dead, and that is why confusion has come into the world!” He said to them, “Yes, Moses is dead, for six hours (noon) has already come (בשש = בא שש) and he has not returned etc.” — as is related in Treatise Shabbat 89a (cf. Rashi and Tosafot there and Tosafot on Bava Kamma 82a ד"ה כדי). One cannot, however, say that they erred only on account of it being a cloudy day, their mistake consisting in not being able to distinguish between forenoon and afternoon, and that thus they were correct in their supposition that he was to return on the sixteenth of Tammuz; for this assumes that he really returned on the day when they made the calf, but that they were under the impression that noon was past — for, as a matter of fact, Moses did not come down until the following day (the day after they had made the calf), for it is said (v. 6) “And they rose up early in the morrow, and brought up burnt offerings”— and only after wards the Lord said to Moses (v. 7) “Go, go down; for thy people … have corrupted themselves”.
האהלה שרה אמו INTO HIS MOTHER SARAH’S TENT — He brought her into the tent and she became exactly like his mother Sarah — that is to say, the words signify as much as, [And he brought her into the tent] and, behold, she was Sarah, his mother). For whilst Sarah was living, a light had been burning in the tent from one Sabbath eve to the next, there was always a blessing in the dough (a miraculous increase) and a cloud was always hanging over the tent (as a divine protection), but since her death all these had stopped. However, when Rebecca came, they reappeared” (Genesis Rabbah 60:16).