John 13:11

for he knew him who is delivering him up; because of this he said, 'Ye are not all clean.'

John 2:25

and because he had no need that any should testify concerning man, for he himself was knowing what was in man.

Matthew 26:24-25

the Son of Man doth indeed go, as it hath been written concerning him, but woe to that man through whom the Son of Man is delivered up! good it were for him if that man had not been born.'

John 6:64-71

but there are certain of you who do not believe;' for Jesus had known from the beginning who they are who are not believing, and who is he who will deliver him up,

John 13:2

And supper being come, the devil already having put it into the heart of Judas of Simon, Iscariot, that he may deliver him up,

John 13:18

not concerning you all do I speak; I have known whom I chose for myself; but that the Writing may be fulfilled: He who is eating the bread with me, did lift up against me his heel.

John 13:21

These things having said, Jesus was troubled in the spirit, and did testify, and said, 'Verily, verily, I say to you, that one of you will deliver me up;'

John 13:26

Jesus answereth, 'That one it is to whom I, having dipped the morsel, shall give it;' and having dipped the morsel, he giveth it to Judas of Simon, Iscariot.

John 17:12

when I was with them in the world, I was keeping them in Thy name; those whom Thou hast given to me I did guard, and none of them was destroyed, except the son of the destruction, that the Writing 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
not concerning you all do I speak; I have known whom I chose for myself; but that the Writing may be fulfilled: He who is eating the bread with me, did lift up against me his heel.
John 2:25
and because he had no need that any should testify concerning man, for he himself was knowing what was in man.
John 6:64
but there are certain of you who do not believe;' for Jesus had known from the beginning who they are who are not believing, and who is he who will deliver him up,
John 17:12
when I was with them in the world, I was keeping them in Thy name; those whom Thou hast given to me I did guard, and none of them was destroyed, except the son of the destruction, that the Writing may be fulfilled.
Matthew 26:24
the Son of Man doth indeed go, as it hath been written concerning him, but woe to that man through whom the Son of Man is delivered up! good it were for him if that man had not been born.'