Titus 2:1
But speak thou the things which become sound doctrine:
1 Timothy 1:10
For whoremongers, for them that defile themselves with mankind, for menstealers, for liars, for perjured persons, and if there be any other thing that is contrary to sound doctrine;
Titus 1:9
Holding fast the faithful word as he hath been taught, that he may be able by sound doctrine both to exhort and to convince the gainsayers.
1 Timothy 6:3
If any man teach otherwise, and consent not to wholesome words, even the words of our Lord Jesus Christ, and to the doctrine which is according to godliness;
2 Timothy 1:13
Hold fast the form of sound words, which thou hast heard of me, in faith and love which is in Christ Jesus.
Titus 2:11-14
For the grace of God that bringeth salvation hath appeared to all men,
Titus 3:8
This is a faithful saying, and these things I will that thou affirm constantly, that they which have believed in God might be careful to maintain good works. These things are good and profitable unto men.