The grand object of the Christian ministry is the glory of God. Whether souls are converted or not, if Jesus Christ be faithfully preached, the minister has not laboured in vain, for he is a sweet savour unto God as well in them that perish as in them that are saved. Yet as a rule, God has sent us to preach in order that through the gospel of Jesus Christ the sons of men may be reconciled to him. . . .
Preach CHRIST, always and evermore. He is the whole gospel. His person, offices, and work must be our one great, all-comprehending theme.
Charles H. Spurgeon in Lectures to my Students, 336, 79.