John 1 vs19-28 Who is John? Pt 2

(John 1:19-28, New King James Version)


John the Baptist's ministry caused quite a ruckus. Probably with the more rural folk. They were more likely to remember the events surrounding his birth.
Now the Religious Leaders want to see what's going on (before it get's out of their control?)
He's not the Christ, he's not Elijah, he's not "that Prophet".
  (By the way: what "Prophet"? The one that Moses said was to come:
“The LORD your God will raise up for you a Prophet like me from your midst, from your brethren. Him you shall hear, Deuteronomy 18:15, 
 This is important!)
John does say that there is a prophecy regarding himself: Isaiah 40:3, "one crying..."
Why cry? To witness to Jesus, "standing among them, whom they do not know", raised among them, from their midst like Moses said.