As usual, Paul began this letter with comments that not only introduced himself and greeted his reader but also set the tone for his emphasis in what followed. The emphasis in this section is on Paul"s duty and the nature of his message rather than on his authority. This salutation is remarkably long and heavy for such a short epistle. Only Paul"s salutation in Romans is longer. This fact reflects the seriousness of the matters that Paul addressed in this letter. [source][source][source]
"Ultimately what Paul has done in this introduction is to place his own apostolate at the center of God"s story; his authority and message are essential to it and derive their meaning from it. Thus, Paul is authenticating the ministry of his coworker Titus by establishing his own authority to instruct Titus." [1][source]