Origen
Catena Aurea · Johannesevangelium 13
When Jesus had thus said, he was troubled in spirit, and testified, and said, Verily, verily, I say unto you, that one of you shall betray me. Then the disciples looked one on another, doubting of whom he spake. Now there was leaning on Jesus’ bosom one of his disciples, whom Jesus loved. Simon Peter therefore beckoned to him, that he should ask who it should be of whom he spake. He then lying on Jesus’ breast saith unto him, Lord, who is it? 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. And after the sop Satan entered into him. Then said Jesus unto him, That thou doest, do quickly. Now no man at the table knew for what intent he spake this unto him. For some of them thought, because Judas had the bag, that Jesus had said unto him, Buy those things that we have need of against the feast; or, that he should give something to the poor. He then having received the sop went immediately out: and it was night. He then lying on Jesus’ breast, saith unto Him, Lord, who is it? Then said Jesus unto him, That thou doest, do quickly.
(t. xxxii. 16.) Our Lord then said to Judas, That thou doest, do quickly, and the traitor this once obeyed his Master. For having received the sop, he started immediately on his work: He then having received the sop, went, immediately out. And indeed he did go out, not only from the house in which he was, but from Jesus altogether. It would seem that Satan, after he had entered into Judas, could not bear to be in the same place with Jesus: for there is no agreement between Jesus and Satan. Nor is it idle enquiring why after he had received the sop, it is not added, that he ate it. Why did not Judas cat the bread, after he received it? Perhaps because, as soon as he had received it, the devil, who had put it into his heart to betray Christ, fearful that the bread, if eaten, might drive out what he had put in, entered into him, so that he went out immediately, before he ate it. And it may be serviceable to remark, that as he who eateth our Lord’s bread and drinketh His cup unworthily, eateth and drinketh to his own damnation; so the bread which Jesus gave him was eaten by the rest to their salvation, but by Judas to his damnation, inasmuch as after it the devil entered into him.