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.
Thankfulness strengthens and builds one's faith in the Lord. Christians need more outward and vocal expression of their thankfulness for God's provisions and blessings. Giving of thanks simply exalts the Lord. According to scripture, man can “magnify him [God] with thanksgiving.” Something magnified is made easier to see. Therefore, when men give thanks to the Lord, they make God more visible to a world overcome by sin. For what do you have to be thankful? Try giving God thanks for answered prayers, deliverance from trials, or simply His daily provisions. This thankfulness would help the world to see Him better. Ungrateful Christians have helped to convince the world that it does not need to give God credit for creation (and redemption among other things). Long before these perversions of truth, Christians ceased to give thanks.
