San Jose John wrote: Declare the Word of God to people, making sure you yourself are blameless so they will "have" to listen to you. Spirit of God does all the work, but you are His means to do so. People like Ray Comfort are on the right track, using God's law and teaching that it must be kept perfectly, to convict people and show them that it cannot be kept perfectly so as to introduce Christ as the only alternative to man's natural capacity for self-justification. Check out his YouTube channel.
Comfort's good on sin and hell. However, he badgers the heck out of folks in his 180 video. Eventually most of them cry uncle and agree with him just so they can get on with their lives. Are they saved? Probably about the same percent as at a BG Crusade: 10%. And most of these were already baptized. Re-saving the saved.