“To any brother who says, ‘I do not know how I can preach more gospel than I do, for I preach very often,’ I would reply, ‘You need not preach oftener, but fill the sermons fuller of gospel.’
The Saviour at the marriage-feast said, ‘Fill the waterpots with water.’ (John 2:7) Let us imitate the servants, of whom we read, ‘They filled them up to the brim.’ (John 2:7)
Let your discourses be full of matter,—sound, gracious, and condensed.
Certain speakers suffer from an awful flux of words; you can scarcely spy out the poor little straw of an idea which has been hurried down an awful Ganges or Amazon of words.
Give the people plenty of thought, plenty of Scriptural, solid doctrine, and deliver it in a way which is growingly better,—every day better, every year better,—that God may be more glorified, and sinners may more readily learn the way of salvation. (1 Tim. 4:15)”
–Charles H. Spurgeon, An All-Round Ministry: Addresses to Ministers and Students (Carlisle, PA: Banner of Truth, 1900/1960), 130-131.