And there were born unto him seven sons and three daughters - The same number was given to him again after these were lost, and his severe trials had been endured; see Job 42:13. Of his second family the names of the daughters are mentioned, Job 42:14. Of his first, it is remarkable that neither the names of his wife, his sons nor his daughters are recorded. The Chaldee, however, on what authority is unknown, says that the name of his wife was דינה dı̂ynâh, Job 2:9.

And there were born unto him,.... By his wife, in lawful wedlock, who was now living, and after mentioned:
seven sons and three daughters; next to his religious character, his graces, and spiritual blessings, and as the chief of his outward mercies and enjoyments, his children are mentioned; and which are indeed blessings from the Lord, and such as good men, and those that fear the Lord, are sometimes blessed with, see Psalm 127:3 and to have a numerous offspring was always esteemed a very great favour and blessing, and as such was reckoned by Job; who, having so many sons, might hope to have his name perpetuated by them, as well as his substance shared among them; and having so many daughters, he might please himself with the thought of marrying them into families, which would strengthen his friendship and alliance with them; just the same number of sons and daughters had Bacchaeus, the third king of Corinth (y).
(y) Heraclides de Politiis ad calcem Aelian. Var. Hist. p. 439.

2, 3 And there were born unto him seven sons and three daughters. His substance also was seven thousand sheep, and three thousand camels, and five hundred yoke of oxen, and five hundred she-asses, and servants in great number; so that this man was the greatest of all the men of the east.
It is a large, princely household. The numbers are large, but must not on that account be considered an invention. The four animals named include both kinds. With the doubled אלפי corresponds the also constructive מאות, the Tsere of which is never shortened, though in the singular one says מאת, from מאה. The aorists, especially of the verb היה (הוה), which, according to its root, signifies not so much esse as fieri, existere, are intended to place us at once in the midst of his prosperity. Ex iis, says Leo Africanus in reference to flocks, Arabes suas divitias ac possessiones aestimant. In fine, Job was without his equal among the קרם בני. So the tribes are called which extend from Arabia Deserta, lying to the east of Palestine, northwards to the countries on the Euphrates, and south over Arabia Petraea and Felix. The wisdom of these tribes, treasured up in proverbs, songs, and traditions, is mentioned in 1-Kings 5:10, side by side with the wisdom of the Egyptians. The writer now takes a very characteristic feature from the life of Job, to show that, even in the height of prosperity, he preserved and manifested the piety affirmed of him.