The apostle Paul knew that there would be times when Timothy, as a minister of the gospel, would have to rebuke or correct others. However, Timothy was not to rebuke others on a whim. In fact, Paul specifically laid out two premises which Timothy’s rebuke should follow: “with all longsuffering and doctrine.” Timothy was to rebuke others while suffering with them for a long time, thus longsuffering. He was to exhibit grace by offering others the opportunity to rectify their areas of failure. At the same time, he was to rebuke others with sound doctrine and not simply based upon mere opinion. This was going to be even more necessary as some would begin to depart from sound doctrine and practice (2 Timothy 4:3-4).
Believers should be zealous of good works, but their zeal must not spring from a position of ignorance. The Bible points to the Jews as a zealous people, but their zeal was not according to knowledge. Nobody worked harder trying to reach a righteous state than did the Jews. However, they failed to realize that true righteousness comes as an unmerited gift from God. Yet, the Jews were “ignorant of God's righteousness,” and went “about to establish their own righteousness” (Romans 10:3). Paul repeatedly testified concerning the futility of trying to earn God's favour through one’s own efforts (Acts 22:3; Philippians 3:6). Before Paul came to know Christ, he thought he should fight against Christ’s followers and zealously persecute the church of God. He even placed many of the new believers into prison and caused their deaths. Yet, he declared that all this was done in ignorance (1 Timothy 1:13). He, like the Jews, had a tremendous zeal, but that zeal was not according to knowledge.