Fountain
In Isaiah 49:10, this signifies knowledge of truth from the Word. (Arcana Coelestia 8568[7])
In Genesis 49:22, this signifies the abundance of truth from the Word. (Arcana Coelestia 6418)
In Isaiah 41:18, this signifies to fill the natural with truths. (Apocalypse Explained 304[21])
In Hosea 13:15, this signifies doctrine destroyed, and fountain signifies the Word. (Apocalypse Explained 730[12])
A fountain, as in Psalm 104:10, denotes knowledges.
(références: Apocalypse Revealed 360, 384; Revelation 7, 16, 16:7)