Job's story is told in the Book of Job, which the text opens by describing him as a man of the land of Uz. The book itself does not name its author.
Key passages:
"There was a man in the land of Uz, whose name was Job; and that man was perfect and upright, and one that feared God, and eschewed evil." — Job 1:1
"And said, Naked came I out of my mother’s womb, and naked shall I return thither: the LORD gave, and the LORD hath taken away; blessed be the name of the LORD." — Job 1:21
"But he said unto her, Thou speakest as one of the foolish women speaketh. What? shall we receive good at the hand of God, and shall we not receive evil? In all this did not Job sin with his lips." — Job 2:10
"And the LORD turned the captivity of Job, when he prayed for his friends: also the LORD gave Job twice as much as he had before." — Job 42:10
Read the full account in Job.