Board Thread:Naruto Discussions/@comment-38812954-20191223174558/@comment-9782468-20191223185032

He used one forbidden jutsu and that's indicative of him knowing them all to you?

If anyone was a forbidden jutsu master it was Tobirama or Orochimaru.

Hiruzen was revered as God of Shinobi for A) being a really powerful Shinobi and B) he knew pretty much every jutsu of Konoha