37 Thus were his ears brought into discipleship to the voice which he heard, because his eyes sufficed not to endure the beams which they saw. That marvel of the dawning of the light was shed forth upon his eyeballs and did them hurt; and the voice of the Lord of the light entered his ears, but did them no harm. But between the light and the Lord of the light, which ought to have been the stronger? For if the light which was created by Him was so overpowering, how much more overpowering He by Whom this very light was created! But if the Lord of the light was overpowering, as indeed He is overpowering, how did His voice enter the hearing and not harm it? Even as that light which hurt the sight? But hear the wonder and the marvel which our Lord wrought by His grace. For our Lord willed not to humble that light which is His; but He being Lord of the light humbled Himself. But as the Lord of the light is greater than the light which is His, so great is the glory that the Lord of the light should humble Himself rather than humble the light.
Source: On Our Lord (New Advent)