Theophylact of Ohrid
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.
While they were enquiring among themselves who should betray the Lord, they would naturally go on to say to one another, “Thou art the traitor,” and so become impelled to say, “I am the best, I am the greatest.” Hence it is said, And there was also a strife among them which should be accounted the greatest.