Historically, the word jealous is connected to the word zeal rather than to envy. Unfortunately, the world has perverted man’s understanding of jealousy by likening it to a detestable sin. The Bible student recognizes that jealousy cannot always be sinful because God says that He is a jealous God (Nahum 1:2) and God does not sin. A scriptural study proves that jealousy can be righteous, or it can be wicked depending upon the intent of the one in whom this jealousy originates. In a very basic sense, jealousy is the unwillingness to share or allow anything to rival the object of one’s desire. Since man has sinful desires, jealously is often viewed as sinful and can lead to other sinful practices. In the Lord’s case, His righteous desire to be man’s only true and living God drives Him to just judgment and godly jealousy.
Paul and Barnabas functioned similar to pioneer church planters who travel into unreached areas with the gospel. As they traveled, they faithfully preached the gospel and started churches with the goal of returning later to strengthen the believers. As Paul and Barnabas were planning their return to these areas, a conflict arose between them concerning who would accompany them on their journey. Barnabas desired to take a young man named John Mark, but Paul adamantly refused. Mark had accompanied them on the first trip, but departed from them and “went not with them to the work.” Paul felt as though he could no longer depend upon John Mark because of his earlier failure. The contention was so strong that Paul and Barnabas parted company and went their own separate ways. This is a sad narrative should it end here; however, there is much more to the story. Praise God that Paul later remarked of John Mark that “he is profitable to me for the ministry” (2 Timothy 4:11).