Salvation must ever be of the Lord

Salvation must ever be of the Lord; and therefore men should apply to him, who alone can work this wondrous change.

2 Corinthians 5:16-18
New Living Translation (NLT)
16 So we have stopped evaluating others from a human point of view. At one time we thought of Christ merely from a human point of view. How differently we know him now! 17 This means that anyone who belongs to Christ has become a new person. The old life is gone; a new life has begun!

18 And all of this is a gift from God, who brought us back to himself through Christ. And God has given us this task of reconciling people to him.  

Clarke's Commentary on the Bible
And all things are of God - As the thorough conversion of the soul is compared to a new creation, and creation is the proper work of an all-wise, almighty Being; then this total change of heart, soul, and life, which takes place under the preaching of the Gospel, is effected by the power and grace of God: this is salvation, and salvation must ever be of the Lord; and therefore men should apply to him, who alone can work this wondrous change.