2 Thessalonians 2:15
So, brothers, stand fast, and hold fast the teachings which you have been taught by me, whether by word of mouth or by letter.
1 Corinthians 11:2
Indeed I praise you for remembering me in everything, and because you are holding fast to the traditions just as you received them.
1 Corinthians 16:13
Be watchful, stand firm in the faith, be manly, be strong.
2 Thessalonians 2:2
not to be "quickly shaken out of your wits" and not to be agitated either by a spirit or by a message, or by an epistle purporting to be from me, saying, "The Day of the Lord is at hand."
2 Thessalonians 3:6
I summon you, in the name of the Lord Jesus Christ, to shun any brother who leads an idle and disorderly life, which is not according to the rule you received from me.
Romans 16:17
I exhort you, brothers, to keep watch of those who are causing the divisions among you, and occasions of stumbling, contrary to the teaching which you have learned.
1 Corinthians 15:58
So, my brothers beloved, stand firm, immovable, always abounding in work for the Lord, because you know that your toil is not fruitless in the Lord.
Philippians 4:1
Stand fast then, brothers, dearly loved and longed for, my joy and my crown, so stand fast in the Lord, beloved!
2 Thessalonians 3:14
If any man does not give heed to what I have said in this letter, mark that man; do not associate with him, so as to make him feel ashamed;
Jude 1:3
Beloved, although I was making all haste to write to you in regard to our common salvation, I am compelled to write you an appeal to defend the faith once for all committed to the saints.