They said therefore to him, "What then do you do for a sign, that we may see, and believe you? What work do you do?
      a.  Their  understandings  shall be  enlightened;  this is promised,  John 6:45-46. It is written in the prophets, who spoke of these things before,  And they shall be all taught of God;  this we find,  ; Isaiah 54:13, and Jeremiah 31:34.  They shall all know me.  Note,