But he is at pains to point out that he is not suggesting that "in all such cases there need be the preaching of false doctrine which involves an open and direct denial of the evangelical truth." What is all too possible - and what is personally pertinent and searching - is that "there may be such a failure in the intelligent presentation of the gospel with the proper emphasis upon that which is primary and fundamental as to bring about a result almost equally deplorable as where the principles of the gospel are openly contradicted or denied. There can be a betrayal of the gospel of grace by silence." (my emphasis)
And so, he adds,
I sometimes feel as if what we need most is a sense of proportion in our presentation of the truth; a new sense of where the centre of gravity in the gospel lies; a return to the ideal of Paul who determined not to know anything among the Corinthians save Jesus Christ and him crucified. This does not mean that every sermon which we preach must necessarily be what is technically called an evangelistic sermon. There may be frequent occasions when to do that would be out of place and when a discourse on some ethical or apologetic or social topic is distinctly called for. But whatever topic you preach on and whatever text you choose, there ought not to be in your whole repertoire a single sermon in which from beginning to end you do not convey to your hearers the impression that what you want to impart to them, you do not think it possible to impart to them in any other way than as a correlate and consequence of the eternal salvation of their souls through the blood of Christ, because in your own conviction that alone is the remedy which you can honestly offer to a sinful world.
Grace and Glory, p.237f