What does the Bible say about the authority of Jesus' words?

In the Gospel of John, we see that Jesus' teachings astonished many, as His presentation carried a unique, inherent authority. For example, in John 7:46, the officers sent to arrest Him returned saying, 'Never man spake like this man.' This response illustrates that His words were not mere doctrine but came with the weight of truth and sincerity, revealing divine principles. His assertive 'I say unto you' serves as a stark contrast to the uncertain teachings of the scribes and Pharisees.