The Real Life Purpose of Jesus According to Liberalism

The truth is that the life-purpose of Jesus discovered by modern liberalism is not the life purpose of the real Jesus, but merely represents those elements in the teaching of Jesus--isolated and misinterpreted--which happen to agree with the modern program. It is not Jesus, then, who is the real authority, but the modern principle by which the selection within Jesus' recorded teaching has been made. Certain isolated ethical principles of the Sermon on the Mount are accepted, not at all because they are teachings of Jesus, but because they agree with modern ideas.

― J. Gresham Machen (Christianity and Liberalism)