Highly Unusual

So the LORD blessed the latter end of Job more than his beginning: for he had fourteen thousand sheep, and six thousand camels, and a thousand yoke of oxen, and a thousand she asses. He had also seven sons and three daughters. And he called the name of the first, Jemima; and the name of the second, Kezia; and the name of the third, Keren-happuch. And in all the land were no women found so fair as the daughters of Job: and their father gave them inheritance among their brethren. (Job 42:12-15, emphasis mine)

This is pretty unusual, I think, listing the daughters names but not the sons? Hmm interesting. First person to give me an explanation will be my new favorite person.