John 6:68

Simon Peter answered in name of all, Κύριε … ζῶντος. He gives a threefold reason why they remained faithful while others left. (1) πρὸς τίνα ἀπελευσόμεθα; “To whom shall we go away?” implying that they must attach themselves to some one as a teacher and mediator in divine things. They cannot imagine that any one should be to them what already Jesus had been. (2) Especially are they bound to Him. because He has words of eternal life, ῥήματα ζωῆς αἰωνίου ἔχεις. They had experienced that His words were spirit and life, John 6:63. In themselves a new life had been quickened by His words, a life they recognised as the true, highest, eternal life. To have received eternal life from Christ makes it impossible to abandon Him. (3) καὶ ἡμεῖς (John 6:69), “we for our part,” whatever others think, πεπιστεύκαμεν καὶ ἐγνώκαμεν “have believed and know,” cf. 1 John 4:16, ἡμεῖς ἐγνώκαμεν καὶ πεπιστεύκαμεν, which shows we cannot press the order [cf. Augustine's “credimus ut intelligamus”] but must accept the double expression as a strong asseveration of conviction: we have believed and we know by experience ὅτι σὺ εἶ … ὁ ἅγιος τοῦ Θεοῦ occurs in Mark 1:24; Luke 6:34; cf. Acts 3:14; Acts 4:27; Acts 4:30; Revelation 3:7. The expression is not Johannine; but the idea of the Messiah as consecrated or set apart is found in John 10:36, ὃν ὁ Πατὴρ ἡγίασε. Peter's confession here is equivalent to his confession at Caesarea Philippi, recorded in the Synoptic Gospels.