Here is a really neat story about D.L. Moody, and how he was discouraged one evening, because he did not have an opportunity to share the Gospel message that day.
"One night Mr. Moody was going home from his place of business. It was very late, and it suddenly occurred to him that he had not spoken to one single person that day about accepting Christ. He said to himself: "Here's a day lost. I have not spoken to anyone today and I shall not see anybody at this late hour." But as he walked up the street he saw a man standing under a lamppost. The man was a perfect stranger to him, though it turned out afterwards the man knew who Mr. Moody was. He stepped up to this stranger and said: "Are you a Christian?" The man replied: "That is none of your business, whether I am a Christian or not. If you were not a sort of a preacher I would knock you into the gutter for your impertinence." Mr. Moody said a few earnest words and passed on.
The next day that man called upon one of Mr. Moody's prominent business friends and said to him: "That man Moody of yours over on the North Side is doing more harm than he is good. He has got zeal without knowledge. He stepped up to me last night, a perfect stranger, and insulted me. He asked me if I were a Christian, and I told him it was none of his business and if he were not a sort of a preacher I would knock him into the gutter for his impertinence. He is doing more harm than he is good. He has got zeal without knowledge." Mr. Moody's friend sent for him and said: "Moody, you are doing more harm than you are good; you've got zeal without knowledge: you insulted a friend of mine on the street last night. You went up to him, a perfect stranger, and asked him if he were a Christian, and he tells me if you had not been a sort of a preacher he would have knocked you into the gutter for your impertinence. You are doing more harm than you are good; you have got zeal without knowledge."
Mr. Moody went out of that man's office somewhat crestfallen. He wondered if he were not doing more harm than he was good, if he really had zeal without knowledge. (Let me say, in passing, it is far better to have zeal without knowledge than it is to have knowledge without zeal. Some men and women are as full of knowledge as an egg is of meat; they are so deeply versed in Bible truth that they can sit in criticism on the preachers and give the preachers pointers, but they have so little zeal that they do not lead one soul to Christ in a whole year.)
Weeks passed by. One night Mr. Moody was in bed when he heard a tremendous pounding at his front door. He jumped out of bed and rushed to the door. He thought the house was on fire. He thought the man would break down the door. He opened the door and there stood this man. He said: "Mr. Moody, I have not had a good night's sleep since that night you spoke to me under the lamppost, and I have come around at this unearthly hour of the night for you to tell me what I have to do to be saved." Mr. Moody took him in and told him what to do to be saved. Then he accepted Christ, and when the Civil War broke out, he went to the front and laid down his life fighting for his country."*
The word of God will take affect in the hearts of people who are hearers. They might reject everything we tell them. They might even report us to the authorities. It doesn't change the fact that God can still use His word and work in their hearts. He may even grant them repentance and faith. We can't become discouraged because of how others react to the Gospel message.
When I was little, if I got a cut, my mom would put peroxide on the cut. She did warn me though that it would hurt. But it was good for the cut. It did hurt whenever she put the peroxide on the cut.
Preaching the Gospel message is like pouring peroxide on a cut. It can sting and be painful. The person could react to the pain by becoming angry or even vicious. But the peroxide will help the cut heal faster, and the Gospel message will turn us back to God so we can be reconciled back to Him.