John 13:11

For he knew him that delivered him up: on account of this he said, Ye are not all clean.

John 2:25

and that he had not need that any should testify of man, for himself knew what was in man.

Matthew 26:24-25

The Son of man goes indeed, according as it is written concerning him, but woe to that man by whom the Son of man is delivered up; it were good for that man if he had not been born.

John 6:64-71

But there are some of you who do not believe. For Jesus knew from the beginning who they were who did not believe, and who would deliver him up.

John 13:2

And during supper, the devil having already put it into the heart of Judas son of Simon, Iscariote, that he should deliver him up,

John 13:18

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

John 13:21

Having said these things, Jesus was troubled in spirit, and testified and said, Verily, verily, I say to you, that one of you shall deliver me up.

John 13:26

Jesus answers, He it is to whom I, after I have dipped the morsel, give it. And having dipped the morsel, he gives it to Judas son of Simon, Iscariote.

John 17:12

When I was with them I kept them in thy name; those thou hast given me I have guarded, and not one of them has perished, but the son of perdition, that the scripture might 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 those whom I have chosen; but that the scripture might be fulfilled, He that eats bread with me has lifted up his heel against me.
John 2:25
and that he had not need that any should testify of man, for himself knew what was in man.
John 6:64
But there are some of you who do not believe. For Jesus knew from the beginning who they were who did not believe, and who would deliver him up.
John 17:12
When I was with them I kept them in thy name; those thou hast given me I have guarded, and not one of them has perished, but the son of perdition, that the scripture might be fulfilled.
Matthew 26:24
The Son of man goes indeed, according as it is written concerning him, but woe to that man by whom the Son of man is delivered up; it were good for that man if he had not been born.