Do not worry about the sins of others, think only of the sins you commit. For we are each responsible for our own sins, not the sins of others. This is not to say one shouldn’t try to help others in need of assistance or guidance, just that we shouldn’t judge or condemn others for sins since we too ourselves are sinners. Preaching of hellfire and damnation only causes fear and chases away those who need salvation. We are all in need of salvation of course, just some know of the way to salvation, some do not and some just are too scared of making the leap of faith. I am not saying we shouldn’t make others aware of the consequences of sin, just we must be preachers, teachers and messengers of the good news.
Salvation is the name of the game, not condemnation.