“The doctrine of Jesus Christ, and of Him crucified, which St. Paul preached, and in which he glorified, is the pillar and ground of truth, the rock upon which the church is built, and against which the gates of hell shall never prevail* (*1 Cor. 2:2; Gal. 6:14; 1 Tim. 3:15; Matt. 16:18). Mistakes in this point are fundamental, dangerous, and, if persisted in, destructive; for, as such a knowledge of God as is connected with his favour and communion is eternal life, so none can come to the Father but by the Son,* (John 17:3; 14:6) nor can any know Him but those to whom the Son will reveal Him* (Matt. 11:27).
“The doctrine of Jesus Christ, and of Him crucified…is the pillar and ground of truth, the rock upon which the church is built…”
On this account Satan’s great endeavour (and on his success herein the strength of his kingdom depends), is to darken and pervert the minds of men, lest they should acknowledge and understand what the Scripture declares of his person, characters, and offices, as well knowing, that if these are set aside, whatever else is left of religion will be utterly unavailing.”
(John Newton, The Works of John Newton, vol. 3, “Of the Heresies propagated by false Teachers in the Apostles’ Days,” p. 276.)