J. Gresham Machen:
We ought never to set present communion with Christ, as so many are doing, in opposition to the gospel; we ought never to say that we are interested in what Christ does for us now, but are not so much interested in what He did long ago.
Do you know what soon happens when men talk that way? They soon lose all contact with the real Christ; their religion would really remain essentially the same if Jesus never lived.
That danger should be avoided by the Christian man with all his might and main. God has given us an anchor for our souls; He has anchored himself to us by the message of the Cross. Let us never cast that anchor off; let us never weaken our connection with the events upon which our faith is based.
Such dependence upon the past will never prevent us from having present communion with Christ. Unlike the communion of the mystics it will be communion not with the imaginings of our own hearts, but with the real Saviour Jesus Christ.
The gospel of redemption through the Cross and resurrection of Christ is not a barrier between us and Christ, but it is the blessed tie by which He has bound us for ever to Him.
– J. Gresham Machen, What Is Faith? (Edinburgh: Banner of Truth, 1991), 153-54
(HT: Of First Importance)