“And there were set there six waterpots of stone, after the manner of the purifying of the Jews.” Six is the number of man, for man was made on the sixth day of creation. Because man—who is identified by the number six—fell into sin, six is also in the Bible a number designating incompleteness/lacking/deficiency. Because of this damaged deficiency, every man needs purification for the sins that he does and the sin that he is, i.e., the sinful nature we all have inherited from Adam. Not out of convenience, then, does the Lord select these six stone waterpots used for the Jewish purification ritual before a meal. The transformation of the water from these waterpots points to the transformation of the entire ritual system of purification – a transformation that culminates in the death of Jesus, where He gives His own blood for wine.

So Jesus answers His mother as He does, and John tells us that this miracle was a sign, so that we won’t miss the most important fact…