John Chrysostom
He did not declare: I am the teacher. Similar to when He previously asked: ‘What do you think of Christ?’ without saying, ‘Of Me,’ the situation is the same here. However, I would like to pose the question: What will those claim who frequently designate the terms ‘One’ and ‘alone’ solely to the Father, thereby excluding the Only Begotten? Will they assert that the Father is the sole instructor? Everyone would agree, and no one would dispute it. Yet, the Savior alone proclaims, ‘you have Christ as your Instructor.’ In affirming, ‘One is Christ's instructor,’ the Savior does not negate that the Father is also an instructor; similarly, in naming the Father as the one teacher, He does not deny that the Son is also a teacher alongside Him. The expressions ‘One’ and ‘alone’ serve to set them apart from humanity and other beings. Therefore, after safeguarding the disciples from this harsh trial and condemning it, the Savior reveals a way to evade it—through humility. See vv. 9.