Arcana Coelestia # 199
199. The fruit from the tree from which they were allowed to eat means the good and truth of faith, that is, the cognitions of faith, revealed to them from the Most Ancient Church. This becomes clear from the fact that reference is made to 'the fruit from the tree of the garden' from which they were to eat, and not merely, as previously in 2:16 where the subject was the celestial man or Most Ancient Church, 'from the tree of the garden'. As was stated at that point, the tree of the garden means perception, that is, the perception of good and truth. And because this good and truth are the product, it is here called fruit, as is also the meaning of 'fruit' many times in the Word.
Herb
'Herb bearing seed,' as mentioned in Genesis 1:29, signifies truth in terms of its use. (Arcana Coelestia 57) Every herb in the Bible signifies some type of knowledge.
'Green herbs,' as mentioned in Genesis 1:30, mean food for the natural man.
'Eating the herb of the field,' as mentioned in Genesis 3:18, signifies that a person should live as a beast.
'Herb of the field' signifies spiritual truth.
(Odkazy: Arcana Coelestia 7626)