What does the Bible say about Jesus' authority?

In the Gospels, particularly in Mark 11:27-33, the authority of Jesus is questioned by the religious leaders. They ask Him, 'By what authority do you do these things?' To this, Jesus responds by raising the question of John's baptism, asking whether it was from heaven or men. Through this exchange, Jesus indicates that His authority is divine, rooted in His identity as the Son of God, and confirmed by His miraculous acts and teachings. His authority is not given by human institutions but is inherent in His divinity.