John 13:27 KJV
And after the sop Satan entered into him. Then said Jesus unto him, That thou doest, do quickly.
John 13:27, King James Version
In context
26 Jesus answered, He it is, to whom I shall give a sop, when I have dipped it. And when he had dipped the sop, he gave it to Judas Iscariot, the son of Simon.
27 And after the sop Satan entered into him. Then said Jesus unto him, That thou doest, do quickly.
28 Now no man at the table knew for what intent he spake this unto him.