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.
Say
As with many common verbs, the meaning of “to say” in the Bible is highly dependent on context. Who is speaking? Who is hearing? What is it about? Is it a command, a message, an apology, instruction? All these things enter into the meaning of “say.” In general, though, “saying” has to do with sharing truth at various levels -- from the most exalted power people can have to perceive the Lord's desires directly to the most basic of orders issued to people at their lowest.