When the ruler of the feast tasted the water now become wine, and didn't know where it came from (but the servants who had drawn the water knew), the ruler of the feast called the bridegroom,

 Finally John says that "they believed the scripture." What scripture? John means that scripture which haunted the early church--". . . or let thy godly one see the Pit" ( Psalms 16:10). Peter quoted it at Pentecost ( Acts 2:31); Paul quoted it at Antioch ( Acts 13:35). It expressed the confidence of the church in the power of God and in the Resurrection of Jesus Christ. 