Spurgeon:

"We are sent to say to blind eyes, 'See,' to deaf ears, 'Hear,' to dead hearts, 'Live,'.......

It seems as if the sign and token of Christianity in some preachers was not a tongue of fire, but a block of ice. You would not like to have a barrister stand up and plead your cause in a cool, deliberate way, never showing the slightest care about whether you were found guilty of murder or acquitted. How could you endure his indifference when you yourself were likely to be hanged? Oh, no! you wish to silence such a false advocate. So, when a man has to speak for Christ, if he is not in earnest, let him go to bed. You smile; but is it not better that he should go to bed than send a whole congregation to sleep without their going to bed? Yes, we must be in downright earnest. If we are to prevail with men, we must love them.......

He that pleads for Christ should himself be moved with the prospect of the judgment-day. When I come in at yonder door at the back of the pulpit, and the sight of that vast crowd bursts upon me, I frequently feel appalled. Think of these thousands of immortal souls gazing through the windows of those wistful eyes, and I am to preach to them all, and be responsible for their blood if I be not faithful to them. I tell you, it makes me feel ready to start back. But then fear is not alone. I am borne up by the hope and belief that God intends to bless these people through the Word which He will enable me to deliver. I believe that everybody in that throng is sent there by God for some purpose, and that I am sent to effect that purpose. I often think to myself, when I am preaching, "Who is being converted now?" It never occurs to me that the Word of the Lord will fail. No, that can never be. I often feel sure that men are being converted, and at all times that God is glorified by the testimony of His truth. You may depend upon it that your hopeful conviction that God's Word cannot return to Him void is a great encouragement to your hearers as well as to yourself. Your enthusiastic confidence that they will be converted may be like the little finger of a mother held out to her babe, to help it to make its way to her. The fire within your hearts may dart a spark into their souls by which the flame of spiritual life shall be kindled in them. Do let us all learn the art of pleading with the souls of men.