In verses 5-9, Paul instructed Timothy to find qualified men to serve as elders in the churches of Crete. This was especially needed at that time because of false teaches described in verses 10-14.
Our text continues this theme, describing the hypocrisy of these evil men, especially the Jews who were seeking to bind the Law upon the brethren. First, Paul noted that those who are “pure” have liberty in “all things.” (Context is important here, as Paul is referring to the limitations regarding diet, etc., that were given to the Jews, but were removed when the law was nailed to the cross, cf. Colossians 2:14-17).
In contrast, these evil men claimed to be religious, “They profess to know God”, but their evil hearts brought defilement to them, even as they imbibed in things that otherwise were pure (cf. Romans 14). Paul was able to discern their hypocrisy (claiming purity, but being defiled) by their actions. They deny Him, being characterized by disobedience. Thus, qualified elders were needed to deal with them.
