2 Thessalonians 2:15

So then, brothers, stand firm and hold to the traditions that ye were taught, whether by word or by letter from us.

1 Corinthians 11:2

Now I praise you, brothers, that ye remember me in all things and keep the traditions, just as I delivered them to you.

1 Corinthians 16:13

Watch ye, stand firm in the faith, act like men, be strong.

2 Thessalonians 2:2

for ye not to be quickly shaken from your mind, nor to be alarmed, neither by spirit, nor by word, nor by a letter as by us, as that the day of the Christ has come.

2 Thessalonians 3:6

Now we command you, brothers, in the name of our Lord Jesus Christ, for you to withdraw from every brother who walks disorderly and not according to the tradition, which they received from us.

Romans 16:17

Now I beseech you, brothers, watch out for those who make the divisions and the stumbling blocks, contrary to the doctrine that ye learned, and turn away from them.

1 Corinthians 15:58

Therefore, my beloved brothers, become ye steadfast, unmovable, always abounding in the work of the Lord, knowing that your labor is not empty in Lord.

Philippians 4:1

So then, my brothers, beloved and longed for, my joy and crown, so stand firm in Lord this way beloved.

2 Thessalonians 3:14

And if any man does not obey our word by this letter, note that man, and do not associate with him, so that he may be ashamed.

Jude 1:3

Beloved, making all diligence to write to you about the common salvation, I had need to write to you exhorting you to earnestly contend for the faith that was once for all delivered to the sanctified.

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
for ye not to be quickly shaken from your mind, nor to be alarmed, neither by spirit, nor by word, nor by a letter as by us, as that the day of the Christ has come.
2 Thessalonians 3:14
And if any man does not obey our word by this letter, note that man, and do not associate with him, so that he may be ashamed.