“I charge you by the Lord that this epistle be read unto all the holy brethren.”
King James Version (KJV)
5:27 I charge you by the Lord - Christ, to whom proper divine worship is here paid. That this epistle - The first he wrote. Be read to all the brethren - That is, in all the churches. They might have concealed it out of modesty, had not this been so solemnly enjoined: but what Paul commands under so strong an adjuration, Rome forbids under pain of excommunication.
1Th 5:27 I charge you by the Lord. His affectionate solicitude impels this solemn charge. Otherwise those in charge of the new church might think the letter was for them specially and that they were to teach its spirit and thoughts to the people. That this epistle be read unto all the holy brethren. In the public assembly.