1. 1 Timothy 1:10
for adulterers and perverts, for slave traders and liars and perjurers—and for whatever else is contrary to the sound doctrine

2. 1 Timothy 4:16
Watch your life and doctrine closely. Persevere in them, because if you do, you will save both yourself and your hearers.

3. 2 Timothy 4:3
For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear.

4. Titus 1:9
He must hold firmly to the trustworthy message as it has been taught, so that he can encourage others by sound doctrine and refute those who oppose it.

5. Titus 2:1
You must teach what is in accord with sound doctrine.