Discipleship
We all are called to make disciples! There are only two kinds of people who cannot disciple, and that is one who is not a follower of Christ and/or one who disobeys God's command and refuses to disciple.
"The most effective evangelism tool ever developed!" Billy Graham "How to Develop a Lighthouse!"
Whatever approach you use, never argue or condemn the other person's beliefs. Focus on God's love for the person, Jesus' death on the cross for our sins, His resurrection, and the person's need to make a commitment to follow Christ. Invite the person to actually pray with you and commit his or her life to Christ.
Have you ever wondered what we are being saved from? This is not a pleasant, happy subject, but, nonetheless, it is extremely important for those whose call it is to help save the lost. We are saved, by Christ, from God's wrath and an eternity in Hell! But, what is Hell?