John 2:6
And there were set there six waterpots of stone, after the manner of the purifying of the Jews, containing two or three firkins apiece.
Cross-reference
John 3:25
Historical context
John 3:25 mentions a dispute about ceremonial washing—directly connects to the purification jars in this verse.
John 11:55
Historical context
John 11:55 mentions people going to purify themselves before Passover, connecting to the purification theme of these stone jars.
Mark 7:2–5
Parallel
Mark 7:2-5 discusses Jewish ceremonial washing traditions—clearly linked to the purification water jars described here.
Hebrews 9:10
Parallel
Hebrews 9:10 describes 'various washings' and 'regulations for the body' — the same Jewish purification practices these stone jars served.
Mark 7:4
Parallel
Mark 7:4 describes Pharisaic washings of cups, pots, and hands — the same Jewish purification traditions these jars were used for.