Each Christian is called to be a witness to Christ in the particular situation in which he or she lives. Each disciple of Jesus Christ is called to declare the wonderful deeds of God.
Christian faith is a centered, personal, relational response to God that involves trust and obedience. Faith in Jesus Christ is trusting that through him alone, God gives us eternal life.
Whatever the scenario, the essence of evangelism is sharing your God story and being intentional about leading someone to a life changing decision with Christ Jesus.