<p>13:18 <i>I speak not of you all. I know whom I have chosen; but the scripture must be fulfilled: He that eats my bread lifted up his heel against me</i>- I have suggested on 12:12 and elsewhere that the Lord arranged the entire scene in order to die by crucifixion at that Passover. It could be that He means here that He knew Judas whom He had chosen; and He chose him to perform the role of betrayer which He knew was necessary in order to bring about the intended final scene. But that is not to say that Judas had no choice in the matter; he did, and the Lord urged him against his path. But He also knew the outcome, and in that sense knew the betrayer whom He had chosen for this role. He was led to plan things as He did by Scripture, which required that one who ate His bread would then betray Him. And so He set things up so that an offended Judas would be present at the last supper, and then do the act of betrayal.</p><p>The implication is that Judas had a heel to crush the Lord with, as if Judas was the seed of the woman and He was the seed of the serpent due to His close association with sin and sinners. However, it has also been pointed out that &ldquo;To show the bottom of one&rsquo;s foot to someone in the Near East is a mark of contempt&rdquo;- E.F. Bishop, <i>Evangelical Times</i> Vol. 70 p. 331. The non-violent resistance to evil and the message of grace led Judas to despise the Lord; and the outpouring of the precious ointment upon Him appeared senseless to the materialistic Judas. His despite of the Lord was therefore a factor in his betrayal.</p><p>Ps. 41:9,10 is quoted from the LXX in Mk. 14:18,21. Yet Jn. 13:18 quotes the same passage from the Hebrew text, with a slight difference. Which was inspired? Surely, both sources of the original were accepted as worthy of quotation. So from this evidence alone we should be wary of concluding that the differences between LXX and the Hebrew text are mutually incompatible. See on Acts 15:16.</p>