John Chrysostom
Catena Aurea · Johannesevangelium 2
His mother saith unto the servants, Whatsoever he saith unto you, do it. And there were set there six waterpots of stone, after the manner of the purifying of the Jews, containing two or three firkins apiece. Jesus saith unto them, Fill the waterpots with water. And they filled them up to the brim. And he saith unto them, Draw out now, and bear unto the governor of the feast. And they bare it. 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, 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. This beginning of miracles did Jesus in Cana of Galilee, and manifested forth his glory; and his disciples believed on him.
(Hom. xxii. [al. xxi.] 2.) Palestine being a dry country, with few fountains or wells, they used to fill waterpots with water, to prevent the necessity of going to the river, if they were unclean, and to have materials for washing at hand. To prevent any unbeliever from suspecting that a very thin wine was made by the dregs having been left in the vessels, and water poured in upon them, He says expressly, According to the manner of the purifying of the Jews: which shews that those vessels were never used to hold wine.