John Wesley on 1 Corinthians 16:22

If any man love not the Lord Jesus Christ - If any be an enemy to his person, offices, doctrines, or commands. Let him be Anathema. Maran - atha - Anathema signifies a thing devoted to destruction. It seems to have been customary with the Jews of that age, when they had pronounced any man an Anathema, to add the Syriac expression, Maran - atha, that is, "The Lord cometh;" namely, to execute vengeance upon him. This weighty sentence the apostle chose to write with his own hand; and to insert it between his salutation and solemn benediction, that it might be the more attentively regarded.