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29 And God said, Behold, I have given you every herb bearing seed, which is upon the face of all the earth, and every tree, in the which is the fruit of a tree yielding seed; to you it shall be for meat.
'A sandal tree' signifies aspects of the natural self.
(References: Apocalypse Explained 518)
10 A river went out of Eden to water the garden; and from there it was parted, and became four heads.