Churches are Full of the Sith - The Return of the Jedi.

To become a Jedi Knight (in the fictional movies Star Wars) a trainee, called a Padawan would go through up to 20 years of training to prove themselves. Being a Jedi was something that required intense dedication to the goal, but also to their Master. They were required to grow in knowledge, skill and character as all of these things contributed to becoming who they need to be as a knight.