Titus 2:1
Teach sound doctrine.
1 Timothy 1:10
It is for fornicators, for abusers of themselves with men, for kidnappers, for liars, for perjurers, and everything else that is contrary to the sound teaching.
Titus 1:9
holding to the faithful word which is according to the teaching, that he may be able to exhort in the sound doctrine, and to reprove (refute) (rebuke) those who contradict.
1 Timothy 6:3
If any man teaches a different doctrine, and does not consent to sound words, even the words of our Lord Jesus Christ, and to the doctrine that is according to godliness,
2 Timothy 1:13
Hold firmly to the true words that I taught you, as the example for you to follow. Remain in the faith and love that are ours in union with Christ Jesus.
Titus 2:11-14
For the grace (divine influence) of God has been revealed, bringing salvation to all men,
Titus 3:8
Faithful is the saying, and concerning these things I desire that you affirm confidently, to the end that they who have believed God may be careful to maintain good works. These things are good and profitable to men.