John 13:11

For he knew who would deliver him up; for this reason he said, You are not all clean.

John 2:25

and had no need that any one should testify of man, for he himself knew what was in man.

Matthew 26:24-25

The Son of man goes, as it is written of him; but alas for that man by whom the Son of man is delivered up! It would have been good for that man, if he had not been born.

John 6:64-71

But there are some among you who believe not. For Jesus knew from the beginning who they were that believed not, and who he was that would betray him.

John 13:2

And supper being over, the devil having already put it into the heart of Judas Iscariot, the son of Simon, to deliver him up,

John 13:18

I speak not of you all. I know whom I have chosen: but that the scripture may be fulfilled, He that eats bread with me has lifted up his heel against me.

John 13:21

When Jesus had spoken these things, he was troubled in spirit, and testified and said: Verily, verily I say to you, that one of you will deliver me up.

John 13:26

Jesus answered: It is he to whom I shall give this morsel after I have dipped it. And when he had dipped the morsel, he gave it to Judas Iscariot, the son of Simon.

John 17:12

While I was with them in the world, I kept them in thy name. Those whom thou gavest me, I have kept; and none of them is lost but the son of perdition, that the scripture may be fulfilled.

Treasury of Scripture Knowledge

Summary

For he knew who should betray him; therefore said he, Ye are not all clean.

Bible References

General references

John 13:18
I speak not of you all. I know whom I have chosen: but that the scripture may be fulfilled, He that eats bread with me has lifted up his heel against me.
John 2:25
and had no need that any one should testify of man, for he himself knew what was in man.
John 6:64
But there are some among you who believe not. For Jesus knew from the beginning who they were that believed not, and who he was that would betray him.
John 17:12
While I was with them in the world, I kept them in thy name. Those whom thou gavest me, I have kept; and none of them is lost but the son of perdition, that the scripture may be fulfilled.
Matthew 26:24
The Son of man goes, as it is written of him; but alas for that man by whom the Son of man is delivered up! It would have been good for that man, if he had not been born.