John 8:43

(tom. xx. 18. [Nic.]) First then, that virtue must be sought after, which hears the divine word; that by degrees we may be strong enough to embrace the whole teaching of Jesus. For so long as a man has not had his hearing restored by the Word, which says to the deaf ear, Be opened: (Mark 7:34) so long he cannot hear. (tom. xx.) And this seems to be the same mistake, as if one said, that an eye which saw right was different in kind from an eye which saw wrong. For just as in these there is no difference of kind, only one of them for some reason sees wrong; so, in the other case, whether a man receives a doctrine, or whether he does not, he is of the same nature.

(Tr. xlii. 9) And they could not hear, because they would not believe, and amend their lives.

"Why," He says, "do ye not understand my speech? Even because ye cannot hear my word." And so they could not understand, because they could not hear. And whence could they not hear, but just because they refused to be set right by believing?

"What sayest thou? Ye have God for your Father, and do ye blame Christ for asserting this?" Seest thou that He said that God was His Father in a special manner? When therefore He had cast them out of their relationship to Abraham, having nothing to reply, they dare a greater thing, and betake themselves to God. But from this honor also He expelleth them, saying, "If God were your Father, ye would love Me; for I proceeded forth and came from God; neither came I of Myself, but He sent Me. Why do ye not understand My speech? Even because ye cannot hear My word."

"Why do ye not understand My speech?" Since they were always doubting, saying, "What is it that he saith, 'Whither I go ye cannot come'?" therefore He telleth them, "Ye do not understand My speech," "because ye have not the word of God. And this cometh to you, because that your understanding is groveling, and because what is Mine is far too great for you." But what if they could not understand? Not to be able here means not to be willing; for "ye have trained yourselves to be mean, to imagine nothing great." Because they said that they persecuted Him as being themselves zealous for God on this account He everywhere striveth to show that to persecute Him is the act of those who hate God, but that, on the contrary, to love Him is the act of those who know God.