Read: Matthew 28:16-20, 1 Corinthians 15:6
And Jesus came and said to them, “All authority in heaven and on earth has been given to me." (Matthew 28:18 ESV)
Then he appeared to more than five hundred brothers at one time, most of whom are still alive, though some have fallen asleep. (1 Corinthians 15:6 ESV)
Jesus appears to the eleven apostles and five hundred believers on Mount Tabor. He charged them to share his message. He gave them guardianship of the Gospel. And he encouraged them to rely on their representative authority based on his own complete authority.
Jesus is the ultimate authority. Many passages outlined by the Old Testament prophets speak about the ruling servant king, the Messiah. John the Apostle's oft studied Revelations describes the story of the One and Only Jesus returning for his Bride, the Church, and initiating his eternal reign of authority.
On a practical level, we can live, love, and laugh just a little bit freer today knowing that any authority we possess is a gift from our greater authority. Jesus holds the key to the Kingdom of God. He holds the power of the Creator. He holds All Authority.