What does John 2:8 mean?
Here again, we see Jesus asking people to participate in His miracles. God has all of the power, but He frequently asks us to do something as a way of contributing to His work. We are expected to be active in our faith, not passive, even though the results are entirely up to God. Notice, also, that there is no hocus-pocus, incantations, or other fireworks. This is important for two reasons.First, true miracles are not for entertainment. They send a message from God, or about God.
Second, Jesus' power comes from His own divine nature. He is not conjuring other spirits, or using some arcane system. What Jesus does is not "magic"—it's a miracle. The headwaiter, or chief servant, was the one in charge of overseeing all of the wedding arrangements. The Bible doesn't mention whether or not he knew that the wine had run out, but it's safe to assume that he did. This helps to explain his surprise at the excellent quality of the wine (John 2:10).