Evangelism is the announcement, proclamation, and/or preaching of the gospel(1 Corinthians 15:1-4), the good news of and about Jesus Christ. Therefore, the gospel is a communicated message–communicated in verbal (Luke 7:22;Romans 10:14-17) and/or written (Luke 1:1-4) form.
The English word “evangelism” comes from the Greek word euaggelion. Most literally translated in the noun form, euaggelion means: “gospel” or “good news.” In the verb form (euaggelizesthai), the meaning of the word changes slightly to “announce” or “bring good news.” The Greek word in its various forms appears fifty-five times in the New Testament. In addition to the before-mentioned translations, the Greek word is also translated as “preach.”
Evangelism, the communication of the gospel message, includes a warning, an explanation, and a call. Evangelism includes warning people about sin and the consequences of sin (John 16:8; Acts 24:25; Revelation 20:11-15). It includes an explanation of God’s remedy for sin–the gospel (Acts 8:29-35; Romans 3:21-26; 2 Corinthians 5:21). And it includes the clear call to repent (to turn from sin and to turn toward God) and believe the gospel, by faith (Mark 1:15;Luke 13:1-5; Acts 17:29-31; Romans 1:17; Romans 10:9-13).