Betrayed by a friend

Yea, mine own familiar friend, in whom I trusted, which did eat of my bread, hath lifted up his heel against me.
(Psalms 41:9)

I speak not of you all: I know whom I have chosen: but that the scripture may be fulfilled, He that eateth bread with me hath lifted up his heel against me. Now I tell you before it come, that, when it is come to pass, ye may believe that I am he. ... Jesus answered, He it is, to whom I shall give a sop, when I have dipped it. And when he had dipped the sop, he gave it to Judas Iscariot, the son of Simon.
(John 13:18-19, 26)

NOTES:

Judas the betrayer was present at the sacramental service. He received from Jesus the emblems of His broken body and His spilled blood. He heard the words, "This do in remembrance of Me." And sitting there in the very presence of the Lamb of God, the betrayer brooded upon his own dark purposes, and cherished his sullen, revengeful thoughts.

At the feet washing, Christ had given convincing proof that He understood the character of Judas. "Ye are not all clean" (John 13:11), He said. These words convinced the false disciple that Christ read his secret purpose. Now Christ spoke out more plainly. As they were seated at the table He said, looking upon His disciples, "I speak not of you all: I know whom I have chosen: but that the scripture may be fulfilled, He that eateth bread with Me hath lifted up his heel against Me."

Even now the disciples did not suspect Judas. But they saw that Christ appeared greatly troubled. A cloud settled over them all, a premonition of some dreadful calamity, the nature of which they did not understand. As they ate in silence, Jesus said, "Verily I say unto you, that one of you shall betray Me." At these words amazement and consternation seized them. They could not comprehend how any one of them could deal treacherously with their divine Teacher. For what cause could they betray Him? and to whom? Whose heart could give birth to such a design? Surely not one of the favored twelve, who had been privileged above all others to hear His teachings, who had shared His wonderful love, and for whom He had shown such great regard by bringing them into close communion with Himself!

As they realized the import of His words, and remembered how true His sayings were, fear and self-distrust seized them. They began to search their own hearts to see if one thought against their Master were harbored there. With the most painful emotion, one after another inquired, "Lord, is it I?" But Judas sat silent. John in deep distress at last inquired, "Lord, who is it?" And Jesus answered, "He that dippeth his hand with Me in the dish, the same shall betray Me. The Son of man goeth as it is written of Him: but woe unto that man by whom the Son of man is betrayed! it had been good for that man if he had not been born." The disciples had searched one another's faces closely as they asked, "Lord, is it I?" And now the silence of Judas drew all eyes to him. Amid the confusion of questions and expressions of astonishment, Judas had not heard the words of Jesus in answer to John's question. But now, to escape the scrutiny of the disciples, he asked as they had done, "Master, is it I?" Jesus solemnly replied, "Thou hast said."

In surprise and confusion at the exposure of his purpose, Judas rose hastily to leave the room. "Then said Jesus unto him, That thou doest, do quickly. . . . He then having received the sop went immediately out: and it was night." Night it was to the traitor as he turned away from Christ into the outer darkness.