'Perfect' in the Bible

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.

And the LORD said unto Satan, Hast thou considered my servant Job, that there is none like him in the earth, a perfect and an upright man, one that feareth God, and escheweth evil?

And the LORD said unto Satan, Hast thou considered my servant Job, that there is none like him in the earth, a perfect and an upright man, one that feareth God, and escheweth evil? and still he holdeth fast his integrity, although thou movedst me against him, to destroy him without cause.

Behold, God will not cast away a perfect man, neither will he help the evil doers:

If I justify myself, mine own mouth shall condemn me: if I say, I am perfect, it shall also prove me perverse.

Though I were perfect, yet would I not know my soul: I would despise my life.

This is one thing, therefore I said it, He destroyeth the perfect and the wicked.

Is it any pleasure to the Almighty, that thou art righteous? or is it gain to him, that thou makest thy ways perfect?

For truly my words shall not be false: he that is perfect in knowledge is with thee.

Dost thou know the balancings of the clouds, the wondrous works of him which is perfect in knowledge?