Why do we have so much information about John “the dipper” (see Josephus)? Isn’t the Gospel about Jesus? Perhaps Luke had a reason for giving John so much airtime, but what was it?

References to John in Acts: Acts 1:5, 22; 10:37; 11:16; 13:24; 18:25; 19:3–4

The reference from Josephus quoted in the recording: http://www.livius.org/sources/content/josephus-on-john-the-baptist