Theophylact of Ohrid
Catena Aurea · Lukasevangelium 22
Then came the day of unleavened bread, when the Passover must be killed. And he sent Peter and John, saying, Go and prepare us the Passover, that we may eat. And they said unto him, Where wilt thou that we prepare? And he said unto them, Behold, when ye are entered into the city, there shall a man meet you, bearing a pitcher of water; follow him into the house where he entereth in. And ye shall say unto the goodman of the house, The Master saith unto thee, Where is the guestchamber, where I shall eat the Passover with my disciples? And he shall shew you a large upper room furnished: there make ready. And they went, and found as he had said unto them: and they made ready the Passover.
By the day of unleavened bread, we must understand that conversation which is wholly in the light of the Spirit, having lost all trace of the old corruption of Adam’s first transgression. And living in this conversation, it becomes us to rejoice in the mysteries of Christ. Now these mysteries Peter and John prepare, that is, action and contemplation, fervid zeal and peaceful meekness. And these preparers a certain man meets, because in what we have just mentioned, lies the condition of man who was created after the image of God. And he carries a pitcher of water, which signifies the grace of the Holy Spirit. But the pitcher is humbleness of heart; for He giveth grace to the humble, who know themselves to be but earth and dust.