2 Thessalonians 2:15

So then, brethren, stand firm and hold to the traditions which you were taught, whether by word of mouth or by letter from us.

1 Corinthians 11:2

I praise you because you remember me in everything and hold firmly to the traditions, just as I delivered them to you.

1 Corinthians 16:13

Be on the your guard, stand firm in the faith, act like men, be strong.

2 Thessalonians 2:2

not to be quickly shaken in mind or excited, either by spirit or by word, or by letter as if from us, to the effect that the day of the Lord has come.

2 Thessalonians 3:6

Now we command you, brethren, in the name of our Lord Jesus Christ, that you keep away from every brother who is living in idleness and not according to the tradition which you received from us.

Romans 16:17

I urge you, brethren, to take note of those who cause divisions and difficulties, contrary to the doctrine which you have learned; avoid them.

1 Corinthians 15:58

Therefore, my beloved brethren, be steadfast, immovable, always abounding in the work of the Lord, knowing that your labor is not in vain in the Lord.

Philippians 4:1

Therefore, my brethren, whom I love and long for, my joy and crown, stand firm thus in the Lord, my beloved.

2 Thessalonians 3:14

If anyone does not obey our instruction in this letter, take special note of that person and do not associate with him, so that he may be ashamed.

Jude 1:3

Beloved, although I was very eager to write you about our common salvation, I felt the necessity to write to you appealing that you contend for the faith which was once for all delivered to the saints.

Treasury of Scripture Knowledge

Summary

Therefore, brethren, stand fast, and hold the traditions which ye have been taught, whether by word, or our epistle.

Bible References

Whether

2 Thessalonians 2:2
not to be quickly shaken in mind or excited, either by spirit or by word, or by letter as if from us, to the effect that the day of the Lord has come.
2 Thessalonians 3:14
If anyone does not obey our instruction in this letter, take special note of that person and do not associate with him, so that he may be ashamed.