John 13:10

Washed. Gr. louo, “to bathe.” Louo is used of washing the entire body (see Acts 9:37 and in the LXX Ex. 2:5; 29:4; Lev. 14:8, 9; etc.). When only a part of the body is washed the word nipto is generally employed, as later in this verse, and in Matt. 6:17; 15:2; etc. Jesus here probably refers to the custom of bathing before attending a feast. When the guests arrived they needed only to have their feet washed. From this the spiritual lesson is evident. The disciples had received spiritual cleansing in the “fountain opened to the house of David ... for sin and for uncleanness” (Zech. 13:1). They had not lapsed into apostasy so as to be in need of a complete recleansing. However, their lives had not been without sin. They had often yielded to Satan’s suggestions. The washing was significant only as it represented removal of sin by sincere repentance and confession.

His feet. Textual evidence may be cited (cf. p. 146) for the omission of the words “save” and “his feet,” thus making the passage read, “the one who has been bathed has no need to be washed.” However, both textually and contextually the preponderance of evidence favors retaining the words.

But not all. The reference is to Judas, who had never yielded himself fully to Christ.