Matthew 26:21 KJV

And as they did eat, he said, Verily I say unto you, that one of you shall betray me.
Matthew 26:21, King James Version

In context

20 Now when the even was come, he sat down with the twelve.

21 And as they did eat, he said, Verily I say unto you, that one of you shall betray me.

22 And they were exceeding sorrowful, and began every one of them to say unto him, Lord, is it I?