Among the important elements in the promotion of conversion are your own tone, temper, and spirit in preaching. If you preach the truth in a dull, monotonous style, God may bless it, but in all probability he will not; at any rate the tendency of such a style is not to promote attention, but to hinder it. It is not often that sinners are awakened by ministers who are themselves asleep. – Spurgeon

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. – Spurgeon

Eternal life springs from death, glory from ignominy, and blessedness from a curse. We are healed by stripes, quickened by death, purchased by blood, crowned by a cross, advanced to the highest honor by the lowest humility, comforted by sorrows, glorified by disgrace, absolved by condemnation, and made rich by poverty. Thus the wisdom of God shines with radiant brightness in the work of redemption. – Thomas Boston

If we are to be strong men, we must be conformed to our Lord. Oh, to be like Him! Blessed be that cross on which we shall suffer, if we suffer for being made like unto the Lord Jesus. If we obtain conformity to Christ, we shall have a wondrous unction upon our ministry, and without that, what is ministry worth? – Spurgeon

Of all things that are to be known this is most evident, that God is to be feared, to be reverenced, served, and worshiped; this is so the beginning of knowledge that those know nothing who do not know this. – Matthew Henry

Matthew Henry's Commentary Vol. 3:793.

The one thing we most urgently needed in Western Christendom is a deeper knowledge of God. We need to know God better . . . We think rather little of what he is like, what he expects of us, what he seeks in us. We are not captured by his holiness and love; his thoughts and words capture too little of our imagination, too little of our discourse, too few of our priorities. – DA Carson

The gospel is like a caged lion. It does not need to be defended, it just needs to be let out of its cage. – C.H. Spurgeon

“In your public meetings devote so much time to prayer that nominal Christians are bored with talking to the God they only claim to know.” – Mark Dever

It is the indispensable duty of every minister, previously to his entering on his office, to prepare and qualify himself for public prayer, as well as for preaching. He ought, by a thorough acquaintance with the Holy Scriptures; by reading the best writers on the subject; by meditation; and by a life of holy communion with God in secret, to endeavor to acquire both the spirit and the gift of prayer.

Thoughts on Public Prayer by Samuel Miller (Harrisonburg: Sprinkle, 1849), 260