Еврейская мысль к Берешит 4:21

וְשֵׁ֥ם אָחִ֖יו יוּבָ֑ל ה֣וּא הָיָ֔ה אֲבִ֕י כָּל־תֹּפֵ֥שׂ כִּנּ֖וֹר וְעוּגָֽב׃

Имя его брата — Юваль; он стал родоначальником всех, кто играет на арфе и свирели.

Dirshuni II

• "And a harp" – see Genesis 4:21; 31:27. "With a ladder" – for this motif mentioned in relation to Jeremiah, descendant of Rahab (Sifrei [Kahana], Beha'alotekha, sec. 78, pp. 188-189), see Midrash Samuel [Lipshitz], 9:6, p. 38. Sheerah daughter of Ephraim – see 1 Chronicles 7:22-24; Miriam Samuel, "'Sheerah,'" Sinai, 125 (5760), pp. 90-95. Six matriarchs – see Song of Songs Rabbah [Vilna], 6:4:2, 33c-d; Pesikta de-Rav Kahana [Mandelbaum], "Vayehi Beyom Kalot Moshe," 7, pp. 11-12.