My pastor when I was in the university, Grant Retief, just wrote a piece on the 9marks blog (http://www.9marks.org/blog) where he describes the prosperity gospel as parallel, post-biblical christianity. He writes that,
A churched nation is not the same thing as a “gospeled” nation, and the massive growth of the so-called prosperity gospel in South Africa suggests that my generation may be observing the rise of “parallel Christianity,” a Christianity that is effectively post-Bible…
In such churches, there is talk of “sin,” “grace,” and “faith.”
But these words are no longer used according to their biblical categories and context. Instead, their meanings are vaguely assumed, or are informed not by theology but psychology. For example, “sin” might be described as the failure to achieve your goals, not as rebellion against an Almighty God.
Once you have redefined sin, it’s a short step to redefine salvation. Salvation is no longer the rescue from God’s wrath by the wrath-absorbing, vicarious death of Jesus for the forgiveness of sin; it is the rescue from the temporal effects of sin. Jesus will rescue you from poverty, depression, mediocrity, and so on.
In short—and using the nine marks—these churches offer motivational talks, not biblical sermons; proof-texts, not biblical theology; applications of the gospel, not the gospel; moral improvement, not conversion; calls to social justice and giving, not evangelism; status in the community, not accountability-affording membership; flattery, not discipline; lessons in getting busy, not discipleship; professionalism, not leadership.
All this produces nice people instead of godly people. They don’t come to read, mark, and learn the Scriptures, they come to learn self-help. They don’t encounter God in his Word, they encounter themselves. The Bible is seldom more than a stage prop, and atmosphere takes the place of a real redeemed community, grappling with the loving and wounding word of God.
These churches, as I say, are post-biblical. Their “Christianity” is a parallel one.
You can read the rest of the article here The Rise of a Parallel, Post-Biblical Christianity.