1 All things that are read from the Holy Scriptures in order to our instruction and salvation, it behooves us to hear with earnest heed. Yet most of all must those things be commended to our memory, which are of most force against heretics; whose insidious designs cease not to circumvent all that are weaker and more negligent. Remember that our Lord and Saviour Jesus Christ both died for us, and rose again; died, to wit, for our offenses, rose again for our justification. Even as you have just heard concerning the two disciples whom He met with in the way, how “their eyes were holden that they should not know Him:” and He found them despairing of the redemption that was in Christ, and deeming that now He had suffered and was dead as a man, not accounting that as Son of God He ever lives; and deeming too that He was so dead in the flesh as not to come to life again, but just as one of the prophets: as those of you who were attentive have just now heard their own words.
Then “He opened to them the Scriptures, beginning at Moses,” and going through all the prophets, showing them that all He had suffered had been foretold, lest they should be more staggered if the Lord should rise again, and the more fail to believe Him, if these things had not been told before concerning Him. For the firmness of faith is in this, that all things which came to pass in Christ were foretold. The disciples, then, knew Him not, save “in the breaking of bread.” And truly he that eats and drinks not judgment to himself in the breaking of bread does know Christ. Afterward also those eleven “thought they saw a spirit.”
He gave Himself to be handled by them, who also gave Himself to be crucified; to be crucified by enemies, to be handled by friends: yet the Physician of all, both of the ungodliness of those, and of the unbelief of these. For you heard when the Acts of the Apostles were read, how many thousands of Christ's slayers believed. If those believed afterwards who had killed, should not those believe who for a little while doubted? And yet even in regard of them, (a thing which you ought especially to observe, and to commit to your memory, because that which shall make us strong against insidious errors, God has been pleased to put in the Scriptures, against which no man dares to speak, who in any sort wishes to seem a Christian), when He had given Himself to be handled by them, that did not suffice Him, but He would also confirm by means of the Scriptures the heart of them that believe: for He looked forward to us who should be afterwards; seeing that in Him we have nothing that we can handle, but have that which we may read.
For if those believed only because they held and handled, what shall we do? Now, Christ is ascended into heaven; He is not to come save at the end, to judge the quick and the dead. Whereby shall we believe, but by that whereby it was His will that even those who handled Him should be confirmed? For He opened to them the Scriptures and showed them that it behooved Christ to suffer, and that all things should be fulfilled which were written of Him in the Law of Moses, and the Prophets, and the Psalms.
He embraced in His discourse the whole ancient text of the Scriptures. All that there is of those former Scriptures tells of Christ; but only if it find ears. He also “opened their understanding that they might understand the Scriptures.” Whence we also must pray for this, that He would open our understanding.
Source: Homilies on the First Epistle of John (New Advent)