Jesus was God’s messenger, but a messenger is only as good as the message you carry. Jesus frequently spent time alone with God. That’s why He could speak for God, because He spent time with God. Later in the chapter, Jesus is going to call some disciples who are going to spend time with Him. He spends time with God; the disciples spend time with Him. That is how the message is conveyed. It’s not just the words that are spoken, it is what is modeled, what is demonstrated and what is convey by simply being with someone.