In the Gospel of John, we see the main theme of this scripture is that the Law of Israel has been replaced by the Grace of Jesus Christ.
John 1 “6 Out of his fullness we have all received grace in place of grace already given. 17 For the law was given through Moses; grace and truth came through Jesus Christ. “
But the people of Israel held on to the Law and rejected Jesus Christ.
John 1 “11 He came to that which was his own, but his own did not receive him. 12 Yet to all who did receive him, to those who believed in his name, he gave the right to become children of God— 13 children born not of natural descent, nor of human decision or a husband’s will, but born of God.”
But all the Gentiles who have believed in Jesus, have become sons of God by grace!
Christ’s first miracle was the announcement of the coming New Covenant of Grace.
John 2 “6 Nearby stood six stone water jars, the kind used by the Jews for ceremonial washing, each holding from twenty to thirty gallons. 7 Jesus said to the servants, “Fill the jars with water”; so they filled them to the brim. 8 Then he told them, “Now draw some out and take it to the master of the banquet.” They did so, 9 and the master of the banquet tasted the water that had been turned into wine. He did not realize where it had come from, though the servants who had drawn the water knew. Then he called the bridegroom aside 10 and said, “Everyone brings out the choice wine first and then the cheaper wine after the guests have had too much to drink; but you have saved the best till now.” 11 What Jesus did here in Cana of Galilee was the first of the signs through which he revealed his glory; and his disciples believed in him.”
The Jews used the jars for the ceremonial washing of water under the old covenant. They did many rituals of cleansing because their sins were always exposed by the Law.
But Jesus saved the BEST for the LAST. Jesus came to bring the New Covenant of Grace, by which we are forgiven all sins by His blood shed on the cross.
Jesus changed the water into wine.
The wine was also shared by Jesus at the Last Supper when He instituted the New Covenant by His death on the cross.
The wine is a symbol of His blood of the New Covenant.
The water is a symbol of the Old Covenant sacrifices that could never take away sin.
Therefore when Jesus transformed the water into wine, He was making a declaration of replacement of the Old Covenant Law with the New Covenant GRACE.
Jesus brought Grace to us all.
Everyone who believes in Jesus has been made perfect and righteous forever!