Hoc est quod ait: Nemo venit ad Patrem, nisi per me. Deinde subjungit: Et amodo cognoscetis eum, et vidistis eum. Sed Philippus unus ex Apostolis, quid audierit non intelligens: Domine, inquit, ostende nobis Patrem, et sufficit nobis. Cui Dominus: Tanto, inquit, tempore vobiscum sum, et non cognovistis me, Philippe? Qui videt me, videt et Patrem. Ecce increpat quod tanto tempore cum ipsis erat, et non cognoscebatur. Nonne ipse dixerat, Et quo ego vado scitis, et viam scitis; et se nescire dicentes, eos haec scire convicerat, addendo atque dicendo, Ego sum via, veritas et vita? Quomodo nunc dicit, Tanto tempore vobiscum sum, et non cognovistis me? cum profecto, et quo iret, et viam scirent, non ob aliud nisi quod ipsum utique scirent? Sed facile ista solvitur quaestio, si dicamus quod eum aliqui eorum sciebant, aliqui nesciebant, atque in his qui nesciebant et Philippus erat: ut quod ait, Et quo ego vado scitis, et viam scitis, illis dixisse intelligatur qui sciebant; non Philippo cui dictum est, Tanto tempore vobiscum sum, et non cognovistis me, Philippe? His ergo qui Filium jam noverant, etiam illud de Patre dictum est, Et amodo cognoscetis eum, et vidistis eum: dictum est enim propter omnimodam similitudinem quae illi cum Patre est, ut ideo amodo dicerentur nosse Patrem, quia noverant similem Filium. Ergo jam sciebant Filium, etsi non omnes, certe quidam eorum quibus dicitur, Et quo vado scitis, et viam scitis: ipse est enim via. Sed Patrem nesciebant, ideo audiunt, Si cognovistis me, et Patrem meum cognovistis: per me utique et illum. Alius enim ego sum, alius ille. Sed ne putarent dissimilem, Et amodo, inquit, cognoscetis eum, et vidistis eum. Viderunt enim ejus simillimum Filium, sed admonendi fuerant talem esse etiam Patrem quem nondum videbant, qualis est Filius quem videbant. Et ad hoc valet quod postea Philippo dicitur, Qui videt me, videt et Patrem. Non quod ipse esset Pater et Filius, quod in Sabellianis, qui vocantur etiam Patripassiani, catholica fides damnat: sed quod tam similes sint Pater et Filius, ut qui unum noverit, ambos noverit. Solemus enim de simillimis duobus ita loqui eis qui unum illorum vident, et qualis est alius volunt nosse, ut dicamus: Vidistis istum, illum vidistis. Sic ergo dictum est, Qui me videt, videt et Patrem: non utique ut ipse sit Pater qui Filius, sed quod a Patris similitudine in nullo prorsus discrepet Filius. Nam nisi duo essent Pater et Filius, non dictum esset, Si cognovistis me, et Patrem meum cognovistis. Utique enim, quia nemo, inquit, venit ad Patrem, nisi per me; si cognovistis me, et Patrem meum cognovistis: quoniam ego per quem venitur ad Patrem, perducam vos ad eum, ut ipsum etiam cognoscatis. Sed quoniam illi sum omnino simillimus, amodo cognoscetis eum, cum cognoscitis me: et vidistis eum, si oculis cordis vidistis me.
This is what He says: No one comes to the Father except through Me. Then He adds: And from now on you will know Him, and you have seen Him. But Philip, one of the Apostles, not understanding what he had heard, said: Lord, show us the Father, and it is enough for us. To him the Lord said: Have I been with you so long a time, and you have not known Me, Philip? He who sees Me sees the Father also. See, He rebukes [them] because He had been with them so long a time and was not known. Had He not Himself said, And where I am going you know, and the way you know; and when they said that they did not know, had He not proved that they knew these things, by adding and saying, I am the way, the truth and the life? How then does He now say, Have I been with you so long a time, and you have not known Me? when surely they knew both where He was going and the way for no other reason than that they certainly knew Him. But this question is easily solved if we say that some of them knew Him and some did not know Him, and that among those who did not know was Philip also; so that what He said, And where I am going you know, and the way you know, is understood to have been said to those who knew, not to Philip, to whom it was said, Have I been with you so long a time, and you have not known Me, Philip? To those, therefore, who already knew the Son, this too was said about the Father, And from now on you will know Him, and you have seen Him: for it was said on account of the complete likeness which He has with the Father, so that they might for that reason be said from now on to know the Father, because they knew the Son who is like Him. So they already knew the Son, if not all, certainly some of those to whom it is said, And where I am going you know, and the way you know: for He Himself is the way. But they did not know the Father; therefore they hear, If you have known Me, you have known My Father also: certainly through Me, Him too. For I am one, He is another. But lest they should think Him unlike, And from now on, He says, you will know Him, and you have seen Him. For they had seen His Son who is most like Him, but they had to be reminded that the Father also, whom they did not yet see, is such as the Son whom they saw. And to this purpose serves what is afterwards said to Philip, He who sees Me sees the Father also. Not that He Himself was both Father and Son, which the catholic faith condemns in the Sabellians, who are also called Patripassians, but that the Father and the Son are so alike that whoever has known one has known both. For we are accustomed to speak thus of two who are very alike to those who see one of them and wish to know what the other is like, so that we say: You have seen this one, you have seen that one. Thus therefore it was said, He who sees Me sees the Father also: not, surely, that He who is the Son is Himself the Father, but that the Son differs in nothing at all from the likeness of the Father. For unless the Father and the Son were two, it would not have been said, If you have known Me, you have known My Father also. For certainly, since no one, He says, comes to the Father except through Me; if you have known Me, you have known My Father also: since I, through Whom one comes to the Father, will lead you to Him, so that you may know Him too. But since I am altogether most like Him, from now on you will know Him, when you know Me: and you have seen Him, if you have seen Me with the eyes of the heart.