Jesus saw Nathanael coming to him and said of him, See, here is a true son of Israel in whom there is nothing false.

But [still] there are some of you who do not believe and have faith.” For Jesus knew from the beginning who did not believe, and who would betray Him.

Jesus answered them, “Did I not choose you, the twelve [disciples]? And yet one of you is a devil (ally of Satan).”

He was talking of Judas, the son of Simon Iscariot. It was he who was to be false to Jesus--one of the twelve.

There was a lot of whispered discussion and murmuring among the crowds about Him. Some were saying, “He is a good man”; others said, “No, on the contrary, He misleads the people [giving them false ideas].”

The one who speaks on his own seeks his own praise. But the one who seeks the praise of him who sent him is genuine, and there's nothing false in him.

Then the Pharisees said to them, Have you, like the others, been given false ideas?

You are of your father the devil, and it is your will to practice the desires [which are characteristic] of your father. He was a murderer from the beginning, and does not stand in the truth because there is no truth in him. When he lies, he speaks what is natural to him, for he is a liar and the father of lies and half-truths.

And yet ye have not come to know him; but, I, do know him: If I say, I know him not, I shall be like you - false; but I know him, and, his word, am I keeping.

So while a meal was going on, the Evil One having now put it into the heart of Judas Iscariot, Simon's son, to be false to him,

(He had knowledge who was false to him; that is why he said, You are not all clean.)

After Jesus had said these things, He was troubled in spirit, and testified and said, “I assure you and most solemnly say to you, one of you will betray Me and hand Me over.”

And Judas, who was false to him, had knowledge of the place because Jesus went there frequently with his disciples.

Their answer was, Jesus the Nazarene. Jesus said, I am he. And Judas, who was false to him, was there at their side.

Then Peter, turning round, saw the disciple who was dear to Jesus coming after them--the disciple who was resting on his breast at the last meal, and said, Lord, who is it who will be false to you?