Although Paul's letters were personally directed to churches or individuals, they were read more widely.  So, at the beginning of Paul's letter to Titus, Paul reaffirmed his commission so that others would respect his authority as coming from Jesus Christ (Titus 1:1-3).  Paul and Titus had ministered together in Crete - apparently, the Apostle took Titus with him to preach the gospel on the island of Crete when he was released from his first imprisonment (around the early 60s AD).  So many people were converted, that there were believers in every city.  

But that was only the beginning.  When Paul moved on to preach the gospel elsewhere, it was Titus' job to teach the new believers how to live and work together in a way that validated the gospel … and attracted many more to Jesus Christ (Titus 2:10).  The unfinished business was to establish viable churches which could grow under godly leadership. This meant that Titus had to appoint the right people and teach them how to lead others in a way that pleases God (Titus 1:6-9).   

Titus also needed to stop people from using their Christian freedom as an excuse for wrong behaviour, power politics or false teaching (Titus 1:10-16).  Patterns of worldly behaviour needed to change.  Titus 2:1-10 addresses the drinking culture of older men and women, wild behaviour among the younger men, slanderous gossip among the women, disrespect from slaves, and foolish arguments from those who thought themselves clever.  You can tell whether people really believe biblical truth by whether they are willing to change their behaviour.  Those who are unwilling to submit to authority, or presume their own right to behave as they like, have never really understood the grace of God which is given to all those who submit to Him.  It would be a hard task for Titus (Titus 2:15).  

It is the same challenge which pastors face today.  Their job is not to find ways of letting everybody please themselves, but to teach the people how to conform to the will of God as revealed in the Scriptures.  Church leadership which fails to deal with people's unfinished business will never make effective disciples or grow a church which is strong to stand for Christ against the world, the flesh and the devil.  Support and pray for your pastor in upholding God’s truth and refuting error, and encourage the pastors who teach the truth without deviating from it, by obeying what they teach from God's Word (Hebrews 13:17).