1 In that lesson of the holy Gospel which has been read today, from power we learn patience. For what are we as servants to the Lord, as sinners to the Just One, as creatures to the Creator? Howbeit, just as in what we are evil, we are so of ourselves; so in whatever respects we are good, we are so of Him, and through Him. And nothing does man so seek as he does power. He has great power in the Lord Christ; but let him first imitate His patience, that he may attain to power. Who of us would listen with patience if it were said to him, “You have a devil”? As was said to Him, who was not only bringing men to salvation, but also subjecting devils to His authority.
Source: Tractates on the Gospel of John (New Advent)