Ibn Ishaaq stated that he was a man of Rum. His name was Job, Ibn Mose, Ibn Razeh, Ibn Esau, Ibn Isaac , Ibn Abraham . Someone else said he was Job, Ibn Mose, Ibn Rimil, Ibn Esau, Ibn Isaac, Ibn Jacob. There have also been other statements on his lineage. Ibn Asaker narrated that his mother was a daughter of Lot . It was said, also, that his father was one who believed in Abraham when he was cast into the fire.

The first opinion is the most plausable, because he was a descendant of Abraham's offspring as Allah Almighty declared: And that was Our proof which We gave Abraham against his people. We raise whom We will in degrees. Certainly your Lord is All-Wise, All-Knowing. And We bestowed upon him Isaac and Jacob, each of them We guided, and before him, We guided Noah, and among his progeny David, Solomon, Job, Joseph, Moses, and Aaron. Thus do We reward the good-doers. Surah 6: 83-84

Allah's Praises of Job
Allah the Almighty praised His worshiper Job in His Glorious Qur'an: Truly! We found him patient. How excellent (a) slave! Verily, he was ever oft-returning in repentance (to Us)! Surah 38: 44
Job was repentant, remembering Allah with thankfulness, patience, and steadfastness. This was the cause of his rescue and the secret of Allah's praising him.
A group of angels were discussing Allah's other human creatures, how those who were humble earned Allah's pleasure, while those who were arrogant incurred His displeasure. One of the angels remarked: 'The best creature on earth today is Job, a man of noble character who displays great patience and always remembers his Generous Lord. He is an excellent model for the worshipers of Allah. In return, his Lord has blessed him with a long life and plenty of riches, yet he is never haughty or selfish. His family, his servants, as well as the needy and the poor share in his good fortune; he feeds and clothes the poor and buys slaves to set them free. He makes those who receive his charity feel as if they are favoring him, so kind and gentle is he."