1. Sound Doctrine I. Teachers of the Gospel Must Speak Sound Doctrine.
Titus was to speak “sound doctrine” (Titus 2:1-3).
Timothy was to follow “good doctrine” (1 Tim. 4:6-7).
They must teach “no other doctrine” (1 Tim 1:3-4).

2. Sound Doctrine II. Elders Must Uphold Sound Doctrine.
They must “exhort” and “convict” by “sound doctrine” (Titus 1:9).

3. Sound Doctrine III. False Doctrine Cannot Be Tolerated.
This would be to share in “evil deeds” (2 John 9-11).
We must “test the spirits” (1 John 4:1-3).
We must be “watchful in all things” (2 Tim. 4:3-5).

4. Sound Doctrine IV. Jesus’ Attitude Toward False Doctrine.
He commanded His disciples to beware of it (Matt. 16:5-12).
It is to engage in “vain” worship (Matt. 15:8-9).
It is taught by “ravenous wolves” (Matt. 7:15-20).

5. Sound Doctrine V. Worldly Doctrines are Contrary to Christ.
They cheat one of the things of Christ (Col. 2:6-8).
“Strange doctrines” are of no profit (Heb. 13:7-9).
We must not follow every “wind of doctrine” (Eph. 4:11-15).