'Perfect' in the Bible

There was a man in the country of Uz named Job. He was a man of perfect integrity, who feared God and turned away from evil.

Then the Lord said to Satan, “Have you considered My servant Job? No one else on earth is like him, a man of perfect integrity, who fears God and turns away from evil.”

Then the Lord said to Satan, “Have you considered My servant Job? No one else on earth is like him, a man of perfect integrity, who fears God and turns away from evil. He still retains his integrity, even though you incited Me against him, to destroy him without just cause.”

Does it delight the Almighty if you are righteous?Does He profit if you perfect your behavior?

For my arguments are without flaw;one who has perfect knowledge is with you.

Do you understand how the clouds float,those wonderful works of Him who has perfect knowledge?