'Jars' in the Bible

Now six stone water jars were set there, in accordance with the ceremonial cleansing of the Jews, each holding two or three measures.

Jesus said to them, "Fill the water jars with water." And they filled them to the brim.

But we have this treasure in earthenware jars, in order that the extraordinary degree of the power may be from God and not from us.

and "he will shepherd them with an iron rod; he will break [them] in pieces like jars made of clay,"