[1.] If any one unpracticed in the art undertake to work a mine, he will get no gold, but confounding all aimlessly and together, will undergo a labor unprofitable and pernicious: so also they who understand not the method of Holy Scripture, nor search out its peculiarities and laws, but go over all its points carelessly and in one manner, will mix the gold with earth, and never discover the treasure which is laid up in it. I say this now because the passage before us containeth much gold, not indeed manifest to view, but covered over with much obscurity, and therefore by digging and purifying we must arrive at the legitimate sense. For who would not at once be troubled at hearing Christ say, “If I testify of Myself, My witness is not true”; inasmuch as He often appeareth to have testified of Himself? For instance, conversing with the Samaritan woman He said, “I Am that speak unto thee”: and in like manner to the blind man, “It is He that talketh with thee” ( c. ix. 37 ); and rebuking the Jews, “Ye say, thou blasphemest, because I said I am the Son of God.” ( c. x. 36.) And in many other places besides He doth this. If now all these assertions be false, what hope of salvation shall we have? And where shall we find truth when Truth Itself declareth, “My witness is not true”? Nor doth this appear to be the only contradiction; there is another not less than this. He saith farther on, “Though I bear witness of Myself, yet My witness is true” ( c. viii. 14 ); which then, tell me, am I to receive, and which deem a falsehood? If we take them out thus [from the context] simply as they are said, without carefully considering the person to whom nor the cause for which they are said, nor any other like circumstances, they will both be falsehoods. For if His witness be “not true,” then this assertion is not true either, not merely the second, but the first also. What then is the meaning? We need great watchfulness, or rather the grace of God, that we rest not in the mere words; for thus the heretics err, because they enquire not into the object of the speaker nor the disposition of the hearers. If we add not these and other points besides, as times and places and the opinions of the listeners, many absurd consequences will follow.