John the Apostle
John 13:16WEB·traditional attribution

Most certainly I tell you, a servant is not greater than his lord, neither one who is sent greater than he who sent him.

Matthew Henry Presbyterian

It has generally been taken for granted by commentators that Christ's washing his disciples' feet, and the discourse that followed it, were the same night in which he was betrayed, and at the same sitting wherein he ate the passover and instituted the Lord's supper; but whether before the solemnity began, or after it was all over, or between the eating of the passover and...

Commenting on John 13:1-17

Jamieson-Fausset-Brown Reformed

The servant is not greater than his lord, &c.--an oft-repeated saying (Mat 10:24, &c.). If ye know these things, happy are ye if ye do them--a hint that even among real Christians the doing of such things would come lamentably short of the knowing.

John Calvin Reformed

16. Verily, verily, I tell you. These are indeed proverbial sayings, which admit of a far more extensive application, but which ought to be accommodated to the case in hand. In my opinion, therefore, they are mistaken who suppose them to have a general acceptation, as if Christ were now exhorting his disciples to bear the cross; for it is more correct to say that...