Titus 3:1

Princes and powers. At the time St. Paul wrote this epistle to Titus, there were many Jews, particularly the disciples of Judas of Gaulan, who maintained that the Hebrews were under no obligation of obeying any other than God, or at most the rulers of their own nation. St. Paul here admonishes them, that in conformity with the example and instruction of our divine Saviour, they ought likewise to obey every other temporal prince set over them by the Almighty, provided they commanded nothing contrary to the law of God. (St. Jerome, Estius, Menochius) --- Piety teaches, and pastors should enforce three duties towards princes: submission to their authority, obedience to their laws, and a disposition of heart to meet all their just desires.