John Chrysostom
The Apostle again turns his love into praise, because Paul’s love was love for God and contained countless blessings. If it is considered great to win the love of a king, what praise is it to be beloved by Paul? If he had not possessed many virtues, he would not have drawn Paul’s love to himself. The Apostle not only did not love those who lived wickedly and lawlessly, but even delivered them to a curse. Thus, for example, he says, “If anyone does not love the Lord Jesus Christ, let him be anathema” (1 Cor 16:22). And again, “If anyone preaches to you a gospel contrary to what you received, let him be anathema” (Gal 1:9).