Every believer should evangelize. I know some Christians think that evangelism is only for people with special gifts for it, but I don't believe the New Testament teaches that. While Paul does say that some believers have the call to be evangelists, all of us have the responsibility of evangelism.
Mark DeverThe difference between apologetics and evangelism is that in apologetics, you are answering objections that the world raises, whereas in evangelism, you are bringing the message that Christ brought. So unbelievers tend to set the agenda in apologetics, and you set the agenda in evangelism.
Mark DeverI heard about a pastor in a church of 5,000 people who employed two seminary students whose main responsibility was to get four new people baptized each week. When asked, "What happens if they can't meet the quota?", his response was, "Then I'll find two students who can". This man wasn't even remotely interested in true gospel preaching. He was results-driven.
Mark Dever