Why the faith we preach is particular

The saving power of faith resides thus not in itself, but in the Almighty Saviour on whom it rests. It is never on account of its formal
nature as a psychic act that faith is conceived in Scripture to be
saving,—as if this frame of mind or attitude of heart were itself a
virtue with claims on God for reward, or at least especially pleasing to
Him (either in its nature or as an act of obedience) and thus
predisposing Him to favour, or as if it brought the soul into an
attitude of receptivity or of sympathy with God, or opened a channel of
communication from Him. It is not faith that saves, but faith in Jesus Christfaith in any other saviour, or in this or that philosophy or human
conceit (Col. 2:16, 18, 1 Tim. 4:1), or in any other gospel than that of
Jesus Christ and Him as crucified (Gal. 1:8, 9), brings not salvation
but a curse. It is not, strictly speaking, even faith in Christ that
saves, but Christ that saves through faith. The saving power resides
exclusively, not in the act of faith or the attitude of faith or the
nature of faith, but in the object of faith; and in this the whole
biblical representation centres, so that we could not more radically
misconceive it than by transferring to faith even the smallest fraction
of that saving energy which is attributed in the Scriptures solely to
Christ Himself.
....Biblical Doctrines, vol. 2 of The Works of Benjamin B. Warfield (New
York: Oxford University Press, 1932; repr., Grand Rapids: Baker, 2000),
504