The motto of all true servants of God must be, “We preach Christ; and him crucified.” A sermon without Christ in it is like a loaf of bread without any flour in it. No Christ in your sermon, sir? Then go home, and never preach again until you have something worth preaching.
[Exposition of Acts 13:13-49 published in 1904]
Leave Christ out? O my brethren, better leave the pulpit out altogether. If a man can preach one sermon without mentioning Christ’s name in it, it ought to be his last, certainly the last that any Christian ought to go to hear him preach. [sermon: “A Prayer for the Church” (1867)]
There's more to a sermon than saying the name of Christ but if you don't have any Christ in your sermon it doesn't matter how articulate and wonderful the rest of it is.
More posted by Tony Reinke.