As Christians we have many responsibilities in this life. One of those responsibilities is to be a voice that tells others of the dagers of sin. One of our jobs is to share Jesus with others. This passage tells us if we fail to share Christ with others we will be held accountable for our inaction. Also, if we refuse to share people may go to hell and we will be held accountable for that as well. Truth is, if you love someone shouldn't you tell them about Jesus. He is the only answer to their sin problem.