Nuggets from "An Urgent Call to a Serious Faith" by Dave Hunt - The Truth Sets Free

Truth is the issue, and it both unites and divides. It unites those committed to it and at the same time divides them from all others who oppose sound doctrine. It is bad enough to propose “unity” between fundamentalism and modernism, Protestantism and Catholicism. The ecumenism of “Christian psychology,” however, that attempts to unite theology with psychology, the evangelical faith with the teachings of godless humanists, is equally bad.

No evangelist would interpret “I am the way” to mean that Christ is only one of many ways to God; or “I am the life” to mean that the life He is and offers needs to be supplemented from other sources. To do so would be a complete denial of the doctrine of Christ. Nor can His statement, “I am the truth,” be interpreted to mean that He is only part of the truth. Yet this is the pernicious effect of “Christian psychology’s” specious slogan, “All truth is God’s truth.” No longer Christ and His Word alone, but now Freud and others are also legitimate sources of “God’s truth.” This heresy is so persistent that I make no apology for dealing with it repeatedly.

The “all truth is God’s truth” euphemism is a basic denial of the doctrine of Christ, which declares that Christ is the truth. God’s truth is “as the truth is in Jesus” (Ephesians:4:21If so be that ye have heard him, and have been taught by him, as the truth is in Jesus:
See All...). Christ the Living Word is revealed in the written Word: “Sanctify them through thy truth: thy word is truth” (John:17:17Sanctify them through thy truth: thy word is truth.
See All...). Christ did not say, “If ye continue in my word…ye shall know part of the truth and you shall be made partially free. There is more truth yet to be revealed through godless humanists that will liberate future generations more completely than I can now free you through my Word and my Spirit alone.” Yet that is the teaching of “Christian psychology.” In Can You Trust Psychology?”, Gary Collins writes “The Bible speaks to the human needs…But God in his goodness also has allowed us [Freud, Jung, et al.] to discover psychological truths about human behavior and counseling that are never mentioned in Scripture but are consistent with the written Word of God and helpful to people facing the problems of modern living.” Here is another example of subtle redefinition whereby biblical no longer means derived from God’s Word but derived elsewhere, then declared to be consistent with Scripture.