Here is Dr. R.C. Sproul on the pragmatic “decisional regeneration” theology of Charles Finney from his article The Pelagian Captivity of the Church:

Modern Evangelicalism almost uniformly and universally teaches that in order for a person to be born again, he must first exercise faith. You have to choose to be born again. Isn’t that what you hear? In a George Barna poll, more than seventy percent of “professing evangelical Christians” in America expressed the belief that man is basically good. And more than eighty percent articulated the view that God helps those who help themselves. These positions — or let me say it negatively — neither of these positions is semi-Pelagian. They’re both Pelagian.

To say that we’re basically good is the Pelagian view. I would be willing to assume that in at least thirty percent of the people who are reading this issue, and probably more, if we really examine their thinking in depth, we would find hearts that are beating Pelagianism. We’re overwhelmed with it. We’re surrounded by it. We’re immersed in it. We hear it every day. We hear it every day in the secular culture. And not only do we hear it every day in the secular culture, we hear it every day on Christian television and on Christian radio.

In the nineteenth century, there was a preacher who became very popular in America, who wrote a book on theology, coming out of his own training in law, in which he made no bones about his Pelagianism. He rejected not only Augustinianism, but he also rejected semi-Pelagianism and stood clearly on the subject of unvarnished Pelagianism, saying in no uncertain terms, without any ambiguity, that there was no Fall and that there is no such thing as original sin.

This man went on to attack viciously the doctrine of the substitutionary atonement of Christ, and in addition to that, to repudiate as clearly and as loudly as he could the doctrine of justification by faith alone by the imputation of the righteousness of Christ. This man’s basic thesis was, we don’t need the imputation of the righteousness of Christ because we have the capacity in and of ourselves to become righteous. His name: Charles Finney, one of America’s most revered evangelists.

Now, if Luther was correct in saying that sola fide is the article upon which the Church stands or falls, if what the reformers were saying is that justification by faith alone is an essential truth of Christianity, who also argued that the substitutionary atonement is an essential truth of Christianity; if they’re correct in their assessment that those doctrines are essential truths of Christianity, the only conclusion we can come to is that Charles Finney was not a Christian. I read his writings and I say, “I don’t see how any Christian person could write this.” And yet, he is in the Hall of Fame of Evangelical Christianity in America. He is the patron saint of twentieth-century Evangelicalism. And he is not semi-Pelagian; he is unvarnished in his Pelagianism. (Online source)

Charles Finney—“Salvation is the work of man.”