Bede the Venerable
Catena Aurea · Lukasevangelium 22
And there was also a strife among them, which of them should be accounted the greatest. And he said unto them, The kings of the Gentiles exercise lordship over them; and they that exercise authority upon them are called benefactors. But ye shall not be so: but he that is greatest among you, let him be as the younger; and he that is chief, as he that doth serve. For whether is greater, he that sitteth at meat, or he that serveth? is not he that sitteth at meat? but I am among you as he that serveth. But to the words of the exhortation He subjoins His own example, as it follows, For which is greater, he who sitteth at meat, or he that serveth? But I am among you, &c.
Or He speaks of that service wherewith, according to John, He their Lord and Master washed their feet. Although by the word itself serving, (John 13:5.) all that He did in the flesh may be implied, but by serving He also signifies that He poureth forth His blood for us.