What does the Bible say about the obligation of a preacher?

In Romans 1:14, the Apostle Paul expresses his sense of obligation, saying he is a debtor to both Greeks and barbarians, wise and unwise. This highlights the preacher's calling to serve everyone without distinction, emphasizing that the gospel is for all humanity. Preaching is not merely an option for the preacher; it is a necessity laid upon them by God. Paul indicates that a true preacher is motivated by necessity to communicate God's message of salvation, which is centered on Jesus Christ and Him crucified. This responsibility is not for personal glory but to fulfill the divine mandate to declare the gospel's power to save all who believe.