And the captain of the guard charged Joseph with them, and he served them: and they continued a season in ward.
-- Gen. 40:4 (KJV)
While the butler and the baker were in jail, the prison guard placed them under Joseph's authority. Even though Joseph was given the authority to tell them what to do, the verse says "he served them."
If you want an increased amount of authority in your life, then you must learn how to serve. You must learn how to accommodate for others.
Numerical Analysis: The numerical pattern for this verse is 4,8. (4) Stay in God's Word in order to be given authority. (8) To have a new beginning in God, serve.