2 Thessalonians 2:15

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

1 Corinthians 11:2

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

1 Corinthians 16:13

Watch ye, stand fast in the faith, acquit yourselves like men; be strong.

2 Thessalonians 2:2

and our gathering together unto him, That ye be not soon shaken in mind or terrified, neither by spirit, nor by word, nor by letter, as from us, as if the day of the Lord were at hand.

2 Thessalonians 3:6

Now we command you, brethren, in the name of our Lord Jesus Christ, to withdraw yourselves from every brother that walketh disorderly and not according to the tradition which he received of us.

Romans 16:17

Now I beseech you, brethren, mark them who cause divisions and offences, contrary to the doctrine which ye have learned, and avoid them.

1 Corinthians 15:58

Therefore, my beloved brethren, be ye stedfast, unmovable, always abounding in the work of the Lord, knowing that your labour is not vain in the Lord.

Philippians 4:1

Therefore, my brethren, beloved and longed for, my joy and crown, so stand fast in the Lord, my beloved.

2 Thessalonians 3:14

And if any man obey not our word by this epistle, note that man and have no company with him, that he may be ashamed.

Jude 1:3

Beloved, when I gave all diligence to write to you of the common salvation, it was needful for me to write to you and exhort you, to contend earnestly for the faith which was once 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
and our gathering together unto him, That ye be not soon shaken in mind or terrified, neither by spirit, nor by word, nor by letter, as from us, as if the day of the Lord were at hand.
2 Thessalonians 3:14
And if any man obey not our word by this epistle, note that man and have no company with him, that he may be ashamed.