Then the angel showed me the river of the water of life, bright as crystal, flowing from the throne of God and of the Lamb through the middle of the street of the city. On either side of the river is the tree of life with its twelve kinds of fruit, producing its fruit each month; and the leaves of the tree are for the healing of the nations (Rev. 22:1-2).
Christ is enthroned in heaven and has His arms spread wide in blessing. He is worshipped by an angel on each side. The river of life flows from His throne to three trees bearing rich fruits. In the foreground Saint John kneels before an angel.
From the 11th century Bamberg Apocalypse.