The ministry is a very serious business. Preaching is not about a speaker talking to an audience as if it were a motivational seminar. It is not about making people feel better as they walk out of the church. The ministry is preaching Jesus Christ and Him crucified. Charles Spurgeon had this to say about the ministry:
A sermon often does a man most good when it makes him most angry. Those people who walk down the aisles and say, “I will never hear that man again,” very often have an arrow rankling in their breast.
He that can toy with his ministry and count it to be like a trade, or like any other profession, was never called of God. But he that has a charge pressing on his heart, and a woe ringing in his ear, and preaches as though he heard the cried of hell behind him, and saw his God looking down on him–oh, how that man entreats the Lord that his hearers may not hear in vain!
I always say to young fellows who consult me about the ministry, “Don’t be a minister if you can help it,” because if the man can help it, God never called him. But if he cannot help it, and he must preach or die, then he is the man.
If any man will preach as he should preach, his work will take more out of him than any other labor under heaven.
If I only had one more sermon to preach before I died, it would be about my Lord Jesus Christ. And I think that when we get to the end of our ministry, one of our regrets will be that we did not preach more of Him. I am sure no minister will ever repent of having preached Him too much. (Sermon 54.149)