Athanasius of Alexandria

Above all, however, I wish to remind you and myself along with you that the Lord does not want us to come irreverently or unprepared to the Easter feast. We must have our doctrine straight, follow the proper liturgy, and do all things properly. The historical record of Israel's feast tells us, "No foreigner, no slave purchased with money, no uncircumcised man, may eat the Passover." It is not supposed to be eaten in just any house. There is a proper place. …

Festal Letter 11 ↗

Cyril of Alexandria

As soon as the disciples had prepared the Passover, they proceed to eat it; as it is said, And when the hour was come, &c. He says this, because the covetous disciple was looking out for the time for betraying Him; but that he might not betray Him before the feast of the Passover, our Lord had not divulged either the house, or the man with whom He should keep the Passover. That this was the cause is very evident from these words.

Catena Aurea by Aquinas ↗

Theophylact of Ohrid

They ate the Passover standing; so how is it said of the Lord that He reclined? They say that, having eaten the lawful Passover, they then reclined afterward, according to the common custom, to eat whatever other foods there were.

Commentary on Luke ↗

Bede

And when the hour had come, he reclined at the table, and the twelve apostles with him. The hour of eating the Passover is designated, which, as it has been often emphasized, occurred on the fourteenth day of the first month, brought to evening, and with the fifteenth moon already appearing to the earth, according to the edicts of the law.

On the Gospel of Luke ↗

Bonaventure

And when the hour had come, etc. After having described the preparation of the paschal meal, he here describes the consecration of the Sacrament of the altar. And since this Sacrament is the fulfillment of the Law and is fruitless for the ungrateful, this section has three parts. …

Commentary on Luke, Chapter 22 ↗