'The river Pison,' as in Genesis 11:15, signifies the intelligence of faith originating in love.

(Reference: Arcana Coelestia 110)

110. Verses 11-12 The name of the first is the Pishon; this encompasses the whole land of Havillah, where there is gold. And the gold of that land is good; bdellium is there and the shoham stone.

The first river or 'the Pishon' means intelligence which comprises faith deriving from love. 'The land of Havillah' means the mind; 'gold' that which is good; 'bdellium and shoham' that which is true. The reason gold is mentioned twice is that it means the good that belongs to love, and the good that belongs to faith deriving from love. And the reason bdellium and shoham are mentioned is that the first means the truth that belongs to love, and the second the truth that belongs to faith deriving from love. Such is the nature of the celestial man.