I charge you by the Lord,.... Or "I adjure by the Lord"; by the Lord Jesus: it is in the form of an oath, and a very solemn one; and shows that oaths may be used on certain and solemn occasions: that this epistle be read unto all the holy brethren; to all the members of the church, who are called "holy", because they were sanctified or set apart by God the Father in election; and were sanctified by the blood of Christ, or their sins were expiated, or atoned for by the sacrifice of Christ in redemption; and were sanctified or made holy by the Spirit of God in regeneration; and were enabled by the grace of God to live holy lives and conversations. Now this epistle being directed only to some of the principal members of the church, it may be to one or more of their elders; lest he or they should be tempted on any account to conceal it, the apostle in a very solemn manner adjures, that it be read publicly to the whole church whom it concerned, that all might hear, and learn, and receive some advantage from it; from whence we may learn, as is observed by many interpreters, that the sacred Scriptures, neither one part nor another, nor the whole of them, are to be kept from private Christians, but may be read, and heard, and used by all.