John 2:6-10
John 2:6 (KJB)
And there were set there six waterpots of stone, after the manner of the purifying of the Jews, containing two or three firkins apiece.
These waterpots of stone had held the water whereby the feet of the guests had been washed and now they were empty. The purifying of the Jews relates to the washing of the pots, feet, hands, plates or whatever which was according to the tradition of the elders. (Mat 15:2 KJV) Why do thy disciples transgress the tradition of the elders? for they wash not their hands when they eat bread. A firkin is about 9 gallons, so the six waterpots would have held between 18-27 gallons apiece or in total108-162 gallons.
John 2:7 (KJB)
Jesus saith unto them, Fill the waterpots with water. And they filled them up to the brim.
Here Jesus commands the servants to fill the waterpots with water. Maybe the servants thought that more guests were coming and there was need for water to wash their feet or hands. Now this would have been a tremendous task to fill these waterpots since water had to be drawn from a well or a brook by bucket and then transported over to the water pots. So this is something which would have taken quite a while to accomplish.
John 2:8 (KJB)
And he saith unto them, Draw out now, and bear unto the governor of the feast. And they bare it.
As soon as the waterpots were filled, the second command came to draw the water. Then the third command came was to get the newly made wine over to the Governor of the feast who would have been the one who was in charge of the entire festivity. At this point, the water had become wine or it was changed while they were bringing it to the Governor. It probably changed while they brought it to the Governor because that principle of acting on faith is seen in another miracle.  (Luke 17:14 KJV) And when he saw them, he said unto them, Go show yourselves unto the priests. And it came to pass, that, as they went, they were cleansed. When Jesus cleansed the ten lepers, they were not immediately cleansed but Jesus commanded them to show themselves to the priests and as they went they were cleansed. This shows an act of faith on behalf of the ten lepers. I am sure if one would have said, why bother we are not cleansed, that one would not have been cleansed. Jesus requires faith. (Heb 11:6 KJV) But without faith it is impossible to please him: for he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him. So this is why as the servants took the water, it had changed because there was an act of faith, on Mary’s part and that of the servants.
John 2:9 (KJB)
When the ruler of the feast had tasted the water that was made wine, and knew not whence it was: (but the servants which drew the water knew;) the governor of the feast called the bridegroom,
Whence - From what source
The ruler of the feast had tasted the wine and instantly knew something was different about this wine. Now the ruler of the feast was probably a servant with higher standing. It was his responsibility to make sure that the food and drink were acceptable for human consumption. If someone had something against those getting married, if there was no buffer, then harm could come to the bride or groom, or even the parents. This verse also tells us that the servants had drawn water and by time they got it to the ruler, it was wine, so we see that it was changed as they went, just like the ten lepers were cleansed “as they went.” In the Kingdom of God, those who are servants will know more about the workings of God than those in higher places. Here we have a perfect example of it. (Mat 23:11 KJV) But he that is greatest among you shall be your servant.
John 2:10 (KJB)
And saith unto him, Every man at the beginning doth set forth good wine; and when men have well drunk, then that which is worse: but thou hast kept the good wine until now.
The ruler of the feast went to the bridegroom and told him that he did everything in reverse. Normally, at the feast the good wine is given at the beginning and then when men are well drunk, then they bring out the cheap wine, which they would not be able to tell the difference from the good wine. Here, since neither the bridegroom nor the ruler of the feast had any clue concerning this better wine, the ruler surmised that the bridegroom had withheld the better wine till the end.
Here we have the spiritual teaching as to why this miracle took place. The bridegroom is the Lord Jesus Christ who weds the body of believers through grace which is the better wine than the wine of the old covenant. Now that wine is in the waterpots which represent the believers. (2 Cor 4:7 KJV) But we have this treasure in earthen vessels, that the excellency of the power may be of God, and not of us. The earthen vessels we have are our bodies where the true believers dwell until we are taken home. The waterpots are those earthen vessels. Since the servants used the regular water to wash the hands and feet, the Lord does that for us when we become saved.
(Isa 52:7 KJV) How beautiful upon the mountains are the feet of him that bringeth good tidings, that publisheth peace; that bringeth good tidings of good, that publisheth salvation; that saith unto Zion, Thy God reigneth!
(James 4:8 KJV) Draw nigh to God, and he will draw nigh to you. Cleanse your hands, -ye sinners; and purify your hearts, ye double minded.
In Isaiah 52:7, we read that the feet of those who bring the true gospel are considered beautiful because they have been cleansed of sin in the inward man and now the same feet which was once used for sin, is now used in the Kingdom of God to bring the true Gospel. Then in James 4:8, we read about the sinners cleansing their hands. The way they are cleansed are through the grace of God in salvation and just like the feet, the hands which were once used for sin, are now engaged in the work of the Kingdom of God.
Now another principle shines forth out of the water being turned to wine. It shows that Jesus is the creator. He created wine out of plain water. Just like He took this world from nothing and made it something. He took the sinner and made them a Saint. So you see the wedding at Cana has nothing to do with some dumb Christian drinking beer in front of a football game on TV with his unsaved buddies. It has to do with the transformation of the sinner into a Saint. (2 Cor 5:17 KJV) Therefore if any man be in Christ, he is a new creature: old things are passed away; behold, all things are become new.