It seems that when Job was restored, he then abandoned his worldly ways, including marriage, perhaps? This is addressing the spiritual side of Job's life, and how he then might have seen God as his Bride-groom, meaning that he no longer found any abundance in the worldly life that he once lived. He became a devoted follower and an upright man after living upside-down for a long while.
I believe that we may see relevance in the prophecy about the days of Noah, and in this last-day, when they were marrying, and giving in marriage. IMO, the world's marriage laws oppose that of God's laws and statutes, and this might explain that Job's family might have also left him, as they might have not liked what he had become.
The world hates the believer, even the men whom have turned back to God and lost their wives and families, and all that they once had in this world. It was also a testing of Job when God sent wrath upon him, just to prove Satan wrong!
The Bible also says that when Christ comes again, He will turn many families against one another, as He did not come to bring peace but to harvest a remnant of believers, and they were separated like the tares from the wheat.
Then, those who are of alike minds are also gathered together, each one to his father, being either the Father in heaven or the father of lies. Thanks