וְשֵׁ֥ם אָחִ֖יו יוּבָ֑ל ה֣וּא הָיָ֔ה אֲבִ֕י כָּל־תֹּפֵ֥שׂ כִּנּ֖וֹר וְעוּגָֽב׃
E o nome de seu irmão era Yuval; ele foi o pai de todos os que tocam a lira e o órgão.
On the Posterity of Cain and his Exile
[100] Jubal, the lawgiver tells us, was the brother of Jobel (Gen. 4:21). “Jubal” is akin in meaning to “Jobel,” for it means “inclining now this way now that,” and it is a figure for the uttered word, which is in its nature brother to mind. It is a most appropriate name for the utterance of a mind that alters the make of things, for its way is to halt between two courses, swaying up and down as if on a pair of scales, or like a boat at sea, struck by huge waves and rolling towards either side. For the foolish man has never learned to say anything sure or well-grounded.
On the Posterity of Cain and his Exile
[103] “This Jubal,” he says, “is a father who invented psaltery and harp” (Gen. 4:21). Most appropriately does he give to sounding speech the title of father of music and of all musical instruments. For nature, when she had wrought for living creatures the organ or instrument of sound as chief and most perfect of all instruments, went on at once to bestow upon it the concords and the various kinds of melodies to the end that it might be a pattern made ready beforehand for the instruments that were to be fashioned artificially. So too with the ear.