How do we know that Job was a righteous man?

The righteousness of Job is established in Scripture through God's own declaration describing him as perfect, upright, and a man who feared God and turned away from evil. This acknowledgment from God serves as a significant testament to Job's character, affirming that he was not only righteous in his actions and thoughts but also in his relationship with the Lord. Job himself does not boast about his righteousness; rather, he acknowledges his imperfections and recognizes that any good within him is due to God's grace. This humility in recognizing his dependence on God further validates his true righteousness as opposed to self-righteousness, showcasing the biblical understanding that all righteousness comes from the grace of God.