We see from God's Word that lost sinners are offered forgiveness of all sins (past, present, and future) and eternal life as a free gift of God's grace by virtue of Christ's fully accomplished redemptive work upon the cross and His bodily resurrection. To receive these priceless gifts, one need only believe the gospel: that one is a sinner deserving God's judgment and unable by self-effort, religious ritual, or any other means to earn or merit salvation even in part: and that Christ paid the full debt that God's justice demands for man's sin. Of course, one must believe the gospel not merely as historic fact but to the extent of placing one's faith completely in the Lord Jesus Christ as personal Savior for eternity.
Christ directed His disciples to preach the good news of the gospel to everyone everywhere. This command to His original followers has become known as the "Great Commission." It is stated two ways: "Go ye into all the world, and preach the gospel" (Mark:16:15); and "make disciples" (Matthew:28:19-20 NASB). Those who preach the gospel are to disciple those who believe it. Born again by God's Spirit into His family (John:3:3-5; 1 John:3:2), converts begin a new life as Christ's followers, eager to learn of Him and to obey the One to whom they now owe an infinite debt of gratitude. —Dave Hunt in Seeking and Finding God
Key Scripture verses related to "Evangelism"