Hebrews 13:9
Do not be carried about with various and strange doctrines. For it is good that the heart be established by grace, not with foods which have not profited those who have been occupied with them
Acts 2:42
And they continued steadfastly in the apostles’ doctrine and fellowship, in the breaking of bread, and in prayers.
Romans 16:17
Avoid Divisive Persons
Now I urge you, brethren, note those who cause divisions and offenses, contrary to the doctrine which you learned, and avoid them.
1 Timothy 4:1
The Great Apostasy
Now the Spirit expressly says that in latter times some will depart from the faith, giving heed to deceiving spirits and doctrines of demons
Pastor need to preach sound doctrine
Titus 1
Qualified Elders
5 For this reason I left you in Crete, that you should (E)set in order the things that are lacking, and appoint elders in every city as I commanded you”” 6 if a man is blameless, the husband of one wife, (F)having faithful children not accused of [b]dissipation or insubordination. 7 For a [c]bishop must be blameless, as a steward of God, not self-willed, not quick-tempered, (G)not given to wine, not violent, not greedy for money, 8 but hospitable, a lover of what is good, sober-minded, just, holy, self-controlled, 9 holding fast the faithful word as he has been taught, that he may be able, by sound doctrine, both to exhort and convict those who contradict.
1 Timothy 3:1-3
New King James Version
Qualifications of Overseers
3 This is a faithful saying: If a man desires the position of a [a]bishop, he desires a good work. 2 A bishop then must be blameless, the husband of one wife, temperate, sober-minded, of good behavior, hospitable, able to teach; 3 not [b]given to wine, not violent, [c]not greedy for money, but gentle, not quarrelsome, not [d]covetous;
Pastors should preach sound doctrine