I hear another man cry, “Oh, sir my want of strength lies mainly in this, that I cannot repent sufficiently!” A curious idea men have of what repentance is! Many fancy that so many tears are to be shed, and so many groans are to be heaved, and so much despair is to be endured. Whence comes this unreasonable notion? Unbelief and despair are sins, and therefore I do not see how they can be constituent elements of acceptable repentance; yet there are many who regard them as necessary parts of true Christian experience. They are in great error… To repent is to change your mind about sin, and Christ, and all the great things of God.
All of Grace, Trinity Press, 2011, 65-6.