The Jews were wont in their dining rooms to have waterpots standing; whether one for every guest (upon which account some think here were six) doth not appear. For the contents of these vessels, it is uncertain; the reason is, because the Jewish measures, both for things dry and liquid, are much unknown to us, most countries varying in their measures. According to our measures, these vessels should contain three hogsheads, or near it; but it is not probable that so great vessels of stone should stand in a room: the end of their standing there was for the people to wash in, before they did eat, Matthew 15:2 Mark 7:3, and to wash their vessels in, Mark 7:4. We are certain of the number of the vessels, but not of the contents of them. Some say, they held so much water as, being turned into wine, was enough for one hundred and fifty persons; but we can make no certain judgment of it.
Related Commentaries of John 2:6
John 2:6
6 And there were set there six waterpots of stone, after the manner of the purifying of the Jews, containing two or three firkins apiece.