The Zealots were a political movement among Jews who sought to overthrow the occupying Roman government. The term Zealots comes from the Greek word zelotes that means emulator or zealous follower. The Bible does not mention the Zealots by name except for describing Simon, one of Jesus’ disciples, as a Zealot. God does not call us to violence. Instead, He calls us to submit to the governing authorities (Romans 13:1) and to live peaceably with all, as much as it depends on us (Romans 12:18).
Some have looked at the attitudes and actions of the Zealots in this period and noted their similarities to modern-day terrorists. However, this label is only partly correct since not all Zealots were violent.
An understanding of the Zealots, however, helps to highlight the choice of Simon the Zealot as one of the disciples of Jesus. For one thing, imagine what it must have been like for Matthew the tax collector, a man who had worked for the Romans, to be in the same group as a man who had wanted to violently overthrow the Romans. Jesus' disciples were a diverse group, unified around Him as the Messiah. Also, consider how shocking Jesus' teaching might have been for a man who had previously been a Zealot. Jesus spoke about being a peacemaker (Matthew 5:9), not retaliating (Matthew 5:38–42), loving one's enemies (Matthew 5:43–48), and a kingdom not of this world (John 18:36). Simon the Zealot likely found himself learning a worldview that stood in contradiction with his previous desires and ways of thinking.
The same could be said for all of Jesus' followers in any time period. God's ways are not like the ways of the world (Matthew 6:19–34; 1 John 2:15–17) and they often require us to deny ourselves (Matthew 16:24–26). Our sinful nature is in contradiction to who God is, but in Christ we are forgiven of sin and gradually learn to put it to death (Ephesians 1:3-14; 2:1–10; 4:17–32; Philippians 2:12–13; Colossians 3:1–17). All of us can consider ourselves unlikely candidates for being Jesus’ disciples, but God died for us when we were still enemies of God (Romans 5:8), and He can bring purpose and restoration to every one of us.