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

Now 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 alert, stand firm in the faith, act like men, be strong.

2 Thessalonians 2:2

that you not be quickly shaken from your composure or be disturbed either by a spirit or a message or a 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 leads an unruly life and not according to the tradition which you received from us.

Romans 16:17

Now I urge you, brethren, keep your eye on those who cause dissensions and hindrances contrary to the teaching which you learned, and turn away from them.

1 Corinthians 15:58

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

Philippians 4:1

Therefore, my beloved brethren whom I long to see, my joy and crown, in this way stand firm 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 will be put to shame.

Jude 1:3

Beloved, while I was making every effort to write you about our common salvation, I felt the necessity to write to you appealing that you contend earnestly for the faith which was once for all handed down 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
that you not be quickly shaken from your composure or be disturbed either by a spirit or a message or a 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 will be put to shame.