God looks for opportunities to show Himself strong in the lives of His saints. This is true both historically and in the lives of His people living today.
Biblically speaking, a man’s name is equal to his character (Proverbs 22:1). This is why God’s character is often defined by His name. Faithful and true are two words that describe the very nature of God, but they are also names by which the Son of God will be called at His second advent (Revelation 19:11). Even the name Jesus was associated with the person and work of our Lord (Matthew 1:21). These names, and many more like them, are well known to believers, but few know that the Lord’s name is also said to be Jealous. Why? Because that is who He is! He is the One true and living God who demands man’s sole attention. Just as He is Faithful and True, God is also Jealous.
In John’s epistle to the elect lady and her children (2 John 1), he encouraged them to look to themselves so that he, and those with him, might not lose those things which they had wrought. In order for John to receive a full reward, those to whom he had ministered must take heed to their own service and their walk before the Lord. This line of thinking seems to be less emphasized today in many Bible-believing groups. However, it is a truth set forth by the scriptures. Paul reiterated this truth in Galatians 4:11 when he said, “I am afraid of you, lest I have bestowed upon you labour in vain.” In 1 Thessalonians 2:19, he declared that God’s people were his hope, joy, and crown of rejoicing. You might say that Paul concluded the matter when he asked, “are not ye my work in the Lord?” (1 Corinthians 9:1).
A zealous person is contagious, both positively and negatively. The apostle Paul cautioned that the early believers had been zealously affected, but not in a good way. Those who opposed the gospel were adamant, yet they unwisely waged war against the truth. Night and day, they zealously fought in order to hinder the ministry of the believers. Ultimately, their zeal affected the people of God. These believers who started strong were hindered by the enemies' efforts to the point that it affected their race for the Lord (Galatians 5:7). Modern day enemies of the gospel are aware of this potential pitfall for the believers. They often display more zeal than those who knowingly possess the truth. Yet, today's passage also teaches that “it is good to be zealously affected always in a good thing.” Zeal breeds zeal. Zeal in righteousness will yield righteous results.
