If you want health for your souls, and if you want to be the instruments of bringing health to others, do not turn your gaze forever within, as though you could find Christ there. Nay, turn your gaze away from your own miserable experiences, away from your own sin, to the Lord Jesus Christ as He is offered to us in the gospel.
It is the same old story, my friends-- the same old story of the natural man. Men are trying today, as they have always been trying, to save themselves-- to save themselves by their own act of surrender, by the excellence of their own faith, by mystic experiences of their own lives. But it is all in vain. Not that way is peace with God to be obtained. It is to be obtained only in the old, old way - by attention to something that was done once for all long ago, and by acceptance of the living Savior who there, once for all, brought redemption for our sin. Oh, that men would turn for salvation from their own experience to the Cross of Christ; oh, that they would turn from the phenomena of religion to the living God!
-- J. Gresham Machen (1881-1937)
from: The Importance of Christian Scholarship in The Defense of The Faith