So he cometh to Simon Peter. He saith unto him, Lord, dost thou wash my feet?
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
Verse 6. Dost thou wash my feet? Every word here is emphatic. Dost thou-- the Son of God, the Messiah--perform the humble office of a servant--toward me, a sinner? This was an expression of Peter's humility, of his reverence for Jesus, and also a refusal to allow him to do it. It is possible, though not certain from the text, that he came to Simon Peter first.
Peter saith . . . Lord, dost thou wash my feet?--Our language cannot bring out the intensely vivid contrast between the "Thou" and the "my," which, by bringing them together, the original expresses, for it is not good English to say, "Lord, Thou my feet dost wash?" But every word of this question is emphatic.