John 13:24

Simon Peter therefore beckoned to him, that he should ask who it should be of whom he spake.

Simon Peter therefore beckoned to him, and said to him, "Tell us who it is of whom he speaks."

Simon Peter therefore beckoneth to him, and saith unto him, Tell `us' who it is of whom he speaketh.

Simon Peter, then, doth beckon to this one, to inquire who he may be concerning whom he speaketh,

So Simon Peter motioned to him to ask Jesus which one He was talking about.