The Duties of a Preacher
There are many passages in the Bible that offer encouragement to and mention the responsibilities of those who wish to preach and uphold the gospel.
“1 I charge you therefore before God and the Lord Jesus Christ, who will judge the living and the dead at His appearing and His kingdom: 2 Preach the word! Be ready in season and out of season. Convince, rebuke, exhort, with all longsuffering and teaching. 3 For the time will come when they will not endure sound doctrine, but according to their own desires, because they have itching ears, they will heap up for themselves teachers; 4 and they will turn their ears away from the truth, and be turned aside to fables. 5 But you be watchful in all things, endure afflictions, do the work of an evangelist, fulfill your ministry.” – 2 Timothy 4:1-5
“2 But as for you, speak the things which are proper for sound doctrine: 2 that the older men be sober, reverent, temperate, sound in faith, in love, in patience; 3 the older women likewise, that they be reverent in behavior, not slanderers, not given to much wine, teachers of good things— 4 that they admonish the young women to love their husbands, to love their children, 5 to be discreet, chaste, homemakers, good, obedient to their own husbands, that the word of God may not be blasphemed. 6 Likewise, exhort the young men to be sober-minded, 7 in all things showing yourself to be a pattern of good works; in doctrine showing integrity, reverence, incorruptibility, 8 sound speech that cannot be condemned, that one who is an opponent may be ashamed, having nothing evil to say of you.” – Titus 2:1-8