How then will they call on him in whom they have not believed? And how are they to believe in him of whom they have never heard? And how are they to hear without someone preaching? (ESV)
One of my favorite Bible stories is found in 2 Kings 6-7. The Syrians had besieged the city of Samaria in Israel. Things had gotten so bad that there is a discussion between two women about eating their children because the starvation was great. In this story is the account of some lepers who were outside the city, primarily because of their unclean condition.
During one night, the Lord caused the Syrians to hear the sound of a coming army. The Syrians fled and left all of their food, weapons and tents. The lepers were the first to discover this wonderful victory that the Lord had brought about for Israel. They were going tent to tent enjoying the spoils of victory. Eventually, they felt convicted about holding on to such good news.
2 Kings 7:9
 Then they said to one another, “We are not doing right. This day is a day of good news. If we are silent and wait until the morning light, punishment will overtake us. Now therefore come; let us go and tell the king's household.” (ESV)
Consider Paul's words in Romans 10:14. We know that everyone who calls on the name of the Lord will be saved. But how can one be saved if he is unaware of the salvation that has been purchased by Christ's blood? If they are to believe they must be told. Someone needs to preach the Word to them. If we disobey we are no better than lepers withholding good news of food for starving people.
Have you received salvation? Do you know those who are not saved? Have you told them about the good news of the Gospel? If you have not, you can say with the lepers, "We are not doing right." Share the good news of Jesus Christ with someone today!