By Silvanus, a faithful brother unto you, as I suppose, I have written briefly, exhorting, and testifying that this is the true grace of God wherein ye stand. By Silvanus, a faithful brother unto you, as I suppose - To say the least of this translation, it is extremely obscure, and not put together with that elegance which is usual to our translators. I see no reason why the clause may not be thus translated: I have written to you, as I consider, briefly, by Silvanus, the faithful brother. On all hands it is allowed that this Silvanus was the same as Silas, Paul's faithful companion in travel, mentioned Acts 15:40; Acts 16:19; and, if he were the same, Peter could never say as I suppose to his faith and piety: but he might well say this to the shortness of his epistle, notwithstanding the many and important subjects which it embraced. See the Syriac, Vulgate, etc. If the words be applied to Silvanus, they must be taken in a sense in which they are often used: "I conclude him to be a trustworthy person; one by whom I may safely send this letter; who will take care to travel through the different regions in Asia, Pontus, Galatia, and Bithynia; read it in every Church; and leave a copy for the encouragement and instruction of Christ's flock." And in such a state of the Church, in such countries, no ordinary person could have been intrusted with such a message.
Exhorting - Calling upon you to be faithful, humble, and steady.
And testifying - Επιμαρτυρων, Earnestly witnessing, that it is the true grace - the genuine Gospel of Jesus Christ, in which ye stand, and in which ye should persevere to the end.