Definitions of words in John 13:21:
Betray {International Standard Bible Encyclopedia}
In {International Standard Bible Encyclopedia}
Jesus {Easton's Bible Dictionary}
Jesus {Hitchcock's Bible Names}
Jesus {International Standard Bible Encyclopedia}
One {International Standard Bible Encyclopedia}
Spirit {Easton's Bible Dictionary}
Spirit {International Standard Bible Encyclopedia}
Tell {International Standard Bible Encyclopedia}
Other definition entries containing John 13:21:
Judas Iscariot {I.S.B.E.}
Person Of Christ, 4-8 {I.S.B.E.}
Psychology {I.S.B.E.}