The flesh is the old life, the natural life inherited from Adam, with its apparent resources of personality, of ancestry, of commitment, of dedication, and so forth. You can do all kinds of religious things in the flesh. The flesh can preach a sermon. The flesh can sing in the choir. The flesh can act as an usher. The flesh can lead people to Christ. Did you know that? The flesh can go out and be very zealous in its witnessing and amass a terribly impressive list of people won to Christ, scalps to hang on a belt. The flesh can do these things but it is absolutely nauseating in the eyes of God. It is merely religious activity. There is nothing wrong with what is being done, but what is terribly wrong is the power being relied upon to do it (Ray Stedman).