A useful concise book on preaching and the call to ministry. The banner of truth edition includes an appendix (pages 66-86) which contains a short tract from Charles Surgeon, The Subject of Apostolic Preaching.
Charles P. Mcllvaine was an episcopalian bishop. He demonstrates a robust Christology and law/Gospel distinction in this concise book.
"Christ is not fully preached when any truth which teaches the sinner's need of such a Saviour, illustrating his preciousness by showing our ruin and beggary through sin dwelling in us, and bringing condemnation upon us, is kept in obscurity" (pg. 44).
"Christ is our 'righteousness' unto justification to every one that believeth so that in him there is no condemnation (Rom. 8:1). But we shall preach him in vain, in that light, unless we show the sinner's absolute need of such righteousness. We must seek, under the power of the Holy Ghost, so to convince him of sin that he shall see himself to be under the condemnation of God's law, without excuse and without hope, till he flies to that refuge" (pg. 44).
Bishop Mclkvaine has a strong Christocentric approach to preaching:
"Be it remembered that while the cross, with its immediate neighborhood, is the metropolis of Christianity, all the region round about is Holy Land, more or less holy according to the nearness to that 'city of our God': 'a land of milk and honey', 'of brooks and fountains of water', intersected in all directions with highways by which pilgrims to Zion approach the desire of their hearts. It is the office of the gospel preacher to map out that land; to trace those converging roads; to set up the way-marks to the City of Refuge" (pg. 43-44).
"But it is manifest from the Scriptures that the Apostles identified the gospel with Christ; so that, in their view and practice, to preach the gospel was neither more nor less than to preach Christ" (pg. 4).
"Our ministry is all darkness, emptiness, and powerlessness; all condemnation to us, all delusion to those who hear us, all dishnonour to the grace of God, whatever the breath of man may say of it, except as it is pervaded, illumined, filled with the testimony of Christ as once the sacrifice for sin, crucified and slain, now the glorified and ever-living Intercessor for all that come unto God by him" (pg. 9).