Taste and See that The Lord is Good.

You won’t find much about Thomas in the other Gospel narratives.  I believe that the reason that John gave us a closer look at Thomas was because he knew that people would have doubts.  After all, the people who would read his Gospel account would have never seen Jesus.  They will only have heard and read about Him.  It was for certain that people would have doubts.  So John addressed those doubts...