John 13:14 Commentary - Garner-Howes Baptist Commentary
1) "If I then, your Lord and Master," (ei oun ego) "If then I,- (didaskalos ho kurios kai ho) "As your Lord and teacher," teacher or respectful Rabbi.
2) "Have washed your feet;” (enipsa humon tous poclas) "Have washed your feet," with your permission, apparently with no serious protest from any, except Peter, Joh 13:6-9. This act was done always as a social act, never in connection with worship or as a religious rite or ordinance.
3) "Ye also ought to wash one another's feet." (kai humeis opheilete allelon niptein tous podas) "You all also ought to wash the feet of one another," as an expression of humility, and by love to serve one another, as expressed Rom 12:10; Gal 6:1-2; 1Pe 5:5-6.
As the washing of feet was then a custom of hospitality, good will, and friendship socially shown, even the parallel custom today, in the Western world, is to hang up coats and hats, and shake hands, to say, "God bless you."
Consult other comments:
John 13:14 - Abbott's Illustrated New Testament
John 13:14 - The Greek Testament
John 13:14 - Albert Barnes' Notes on the Bible
John 13:14 - Calvin's Complete Commentary
John 13:14 - The Cambridge Bible for Schools and Colleges
John 13:14 - Adam Clarke's Commentary and Critical Notes on the Bible
John 13:14 - Commentary on the Holy Bible by Thomas Coke
John 13:14 - Companion Bible Notes, Appendices and Graphics
John 13:14 - Expository Notes of Dr. Constable (Old and New Testaments)
John 13:14 - Ellicott's Commentary for English Readers (Old and New Testaments)
John 13:14 - The Expositor’s Greek Testament by Robertson
John 13:14 - Garner-Howes Baptist Commentary
John 13:14 - John Gill's Exposition of the Entire Bible
John 13:14 - Gnomon of the New Testament
John 13:14 - Henry Alford's Greek Testament
John 13:14 - Jamieson, Fausset and Brown's Commentary Critical and Explanatory on the Whole Bible
John 13:14 - Heinrich August Wilhelm Meyer's New Testament Commentary
John 13:14 - English Annotations on the Holy Bible by Matthew Poole
John 13:14 - Old and New Testaments Restoration Commentary
John 13:14 - Robertson's Word Pictures in the New Testament
John 13:14 - A Popular Commentary on the New Testament
John 13:14 - John Trapp's Complete Commentary (Old and New Testaments)
John 13:14 - The Treasury of Scripture Knowledge
John 13:14 - Vincent's Word Studies in the New Testament
John 13:14 - Whedon's Commentary on the Old and New Testaments
Garner-Howes Baptist Commentary

The Garner-Howes Baptist Commentary of the Whole Bible was originally published as a 23-volume set by Albert Garner (principal author) along with J. C. Howes, G.F. Crumley, and Eugene Garner in 1985. The Blessed Hope Foundation has released this digital edition into the public domain.