Theophylact of Ohrid

Now on the same fifth day He sends two of His disciples to prepare the Passover, namely, Peter and John, the one in truth as loving, the other as loved. In all things showing, that even to the end of His life He opposed not the law. And He sends them to a strange house; for He and His disciples had no house, else would He have kept the Passover in one of them. So it is added, And they said, Where will thou that we prepare? …

Catena Aurea by Aquinas ↗

Bede

Now the day of Unleavened Bread came, on which it was necessary to sacrifice the Passover. And he sent Peter and John saying: Go and prepare the Passover for us, that we may eat. The day of unleavened bread of Passover refers to the fourteenth day of the first month, when, with leaven cast out, the Passover, that is, the lamb, was usually sacrificed in the evening, as has already been said above. Explaining this, the Apostle says: For Christ our Passover is sacrificed (1 Cor. 5). …

On the Gospel of Luke ↗

Bonaventure

Now came the day of unleavened bread, etc. After the Evangelist described the perverse machination of Judas the betrayer, here secondly he describes the dispensative institution of the Sacrament of the altar. And since this Sacrament was to succeed the paschal lamb, therefore this part has two parts, in the first of which is treated the preparation of the paschal meal: in the second, the eating of the lamb and the consecration of the Sacrament of the altar, at the passage: And when the hour had come, he reclined at table. …

Commentary on Luke, Chapter 22 ↗