'By Grace' in the Bible

Yet not as the offence, so also is the free gift. For if by the offence of one many died, much more the grace of God, and the gift by grace, that of one man, Jesus Christ, hath abounded unto many.

But if by grace, then it is no more of works: else grace is no longer grace. And if it be of works, then it is no more grace; else work is no longer work.

For if I by grace am a partaker, why am I blamed for that for which I give thanks?

through his great love wherewith he loved us, Hath quickened us together with Christ, even when we were dead in trespasses, (by grace ye are saved) And hath raised us up together,

For by grace ye are saved through faith; and this not of yourselves: