Most Christians agree that the Bible encourages Christians to share their faith for two reasons: first, witnessing is an act of obedience to Jesus’ model and command (Matthew 28:19-20; Mark 16:15; Luke 9:23; John 15:16, 21; 2 Peter 3:9); second, witnessing demonstrates that we are not ashamed of God’s saving work in our life (Luke 9:26; Romans 1:16). Unfortunately, Bill Bright notes that a 2005 study by the Barna Research Group concluded that only 55 percent of born-again Christians believe it is their responsibility to share their faith. More surprising, Dr. Bright also noted a study by Campus Crusade for Christ that found that only 2 percent of Christians share their faith on a regular basis.
Why? Fear of reprisal may be one reason.