John of Damascus — on Gal 1:12

“Do you see how he constantly affirms that he became God's disciple, in contrast to the claim of those who imposed the circumcision upon the Galatians, arguing that those who become disciples of Christ, i.e. Peter and James and John, permit the circumcision, whereas he is a disciple of the disciples and, therefore, they should not pay attention to them rather than to him?”