For he means, that not an individual among mankind will be found in whom the promise of salvation may be accomplished, if it involves the condition of innocence; and that faith, if it is propped up by works, will instantly fall. This is true; because, so long as we look at what we are in ourselves, we must tremble in the sight of God, so far from having a firm and unshaken confidence of eternal life. I speak of the regenerate; for how far from righteousness is that newness of life which is begun here below?

It is not to be denied, however, that the two things, Justification and Sanctification, are constantly conjoined and cohere; but from this it is erroneously inferred that they are one and the same. For example: — The light of the sun, though never unaccompanied with heat, is not to be considered heat. Where is the man so undiscerning as not to distinguish the one from the other? We acknowledge, then, that as soon as any one is justified, renewal also necessarily follows: and there is no dispute as to whether or not Christ sanctifies all whom he justifies. It were to rend the gospel, and divide Christ himself, to attempt to separate the righteousness which we obtain by faith from repentance.

—Calvin Contra Trent