Berean Study Bible
Therefore, brothers, stand firm and cling to the traditions we taught you, whether by speech or by letter.

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

American Standard Version
So then, brethren, stand fast, and hold the traditions which ye were taught, whether by word, or by epistle of ours.

Darby Bible Translation
So then, brethren, stand firm, and hold fast the instructions which ye have been taught, whether by word or by our letter.

Douay-Rheims Bible
Therefore, brethren, stand fast; and hold the traditions which you have learned, whether by word, or by our epistle.

English Revised Version
So then, brethren, stand fast, and hold the traditions which ye were taught, whether by word, or by epistle of ours.

Young's Literal Translation
so, then, brethren, stand ye fast, and hold the deliverances that ye were taught, whether through word, whether through our letter;