{He shewed me} (edeixen moi). The angel as in  21:9,10 
(cf.  1:1  4:1 ). Now the interior of the city. {A river of water
of life} (potamon hudatos z(9388)s). For hud(9372) z(9388)s (water of
life) see  7:17  21:6  22:17  Joh 4:14 . There was a river in the
Garden of Eden ( Ge 2:10 ). The metaphor of river reappears in
 Zec 14:8  Eze 47:9 , and the fountain of life in  Joe 3:18  Jer
2:13  Pr 10:11  13:14  14:27  16:22  Ps 36:10 . {Bright as
crystal} (lampron h(9373) krustallon). See  4:6  for krustallon
and  15:6  19:8  22:16  for lampron. "Sparkling like rock
crystal" (Swete), shimmering like mountain water over the rocks.
{Proceeding out of the throne of God and of the Lamb}
(ekporeuomenon ek tou thronou tou theou kai tou arniou). Cf.
 Eze 47:1  Zec 14:8 . Already in  3:21  Christ is pictured as
sharing the Father's throne as in  Heb 1:3 . See also  22:3 .
This phrase has no bearing on the doctrine of the Procession of
the Holy Spirit.