Few, perhaps, in any Christian church will actually substitute something they can do for Christ, and deliberately say, I will not be saved by Christ. Many, however, do zealously strive to put something of their own making, Cain-like, along with Christ. It is generally the Bible and Christ; or feelings and Christ; or the Virgin Mary and Christ; or the Church and Christ; or my dead level best and Christ; or prayer and Christ. All these are but subtle forms of unbelief and an evasive form of Christ rejection.
Building Gold, Silver and Precious Stones, N. A. Woychuk, 1947, 1955, 1995.