“A sermon without Christ as its beginning, middle, and end is a mistake in conception and a crime in execution…. When we preach Jesus Christ, then we are not putting out the plates, and the knives, and the forks, for the feast, but we are handing out the bread itself…. [Let us] preach Christ to sinners if we cannot preach sinners to Christ…. I wish that our ministry—and mine especially—might be tied and tethered to the cross.”