5. The text of the allegory is repeated and enlarged. That the disciples are the branches has been implied but not stated. Note the irregular construction and comp. Joh 5:44.
ὅτι χωρὶς ἐμοῦ. Because apart from Me (Joh 1:3; Eph 2:12). Christians cannot live as such if severed from Christ. Nothing is here said about those who are not Christians; but there is a sense in which the words are true of them also.