Waters issuing out of the sanctuary
'The waters issuing out of the sanctuary,' as in Ezekiel 47:12, signify the life and mercy of the Lord, who is the sanctuary.
(References: Arcana Coelestia 57)
Ezekiel 47:12
12
By the river on its bank, on this side and on that side, shall grow every tree for food, whose leaf shall not wither, neither shall its fruit fail: it shall bring forth new fruit every month, because its waters issue out of the sanctuary; and its fruit shall be for food, and its leaf for healing.