It grieves me ofttimes to see poor souls, that have a zeal for God and a desire of eternal welfare, kept by such directors and directions under a hard, burdensome, outside worship and service of God, with many specious endeavours for mortification, in an utter ignorance of the righteousness of Christ, and unacquaintedness with his Spirit, all their days. Persons and things of this kind I know too many. If ever God shine into their hearts, to give them the knowledge of his glory in the face of his Son Jesus Christ, they will see the folly of their present way.
– John Owen –
from The Mortification of Sin in Believers, volume 6 of Works, page 40