2 Thessalonians 2:15
Therefore, my brothers, stand fast and hold the teachings which you have been taught, whether by word or by our letter.
1 Corinthians 11:2
But I praise you, brothers, that you remember me in all things, and you keep the doctrines as I delivered them to you.
1 Corinthians 16:13
Watch! Stand fast in the faith! Be men! Be strong!
2 Thessalonians 2:2
that you should not be soon shaken in mind or troubled, neither by spirit, nor by word or letter, as through us, as if the Day of Christ is at hand.
2 Thessalonians 3:6
Now we command you, brothers, in the name of our Lord Jesus Christ, that you withdraw yourselves from every brother who walks disorderly, and not after the teaching which he received from us.
Romans 16:17
And I exhort you, brothers, to watch those making divisions and offenses contrary to the doctrine which you have learned, and avoid them.
1 Corinthians 15:58
So that, my beloved brothers, be steadfast, immovable, always abounding in the work of the Lord, knowing that your labor is not without fruit in the Lord.
Philippians 4:1
Therefore, my brothers, ones loved and longed for, my joy and crown, stand fast in this way in the Lord, beloved ones.
2 Thessalonians 3:14
And if anyone does not obey our word by this letter, mark that one and have no company with him, that he may be ashamed.
Jude 1:3
Having made all haste to write to you about the common salvation, beloved, I had need to write to you to exhort you to contend earnestly for the faith once delivered to the saints.