Arcana Coelestia # 1809
1809.'If you are able to count them' means the fruitfulness of love and the multiplication of faith, or what amounts to the same, the fruitfulness of good and the multiplication of truth. This meaning - namely, that these are not able to be counted - becomes clear without explanation.
Down
Down" is used many different ways, and its spiritual meaning in the Bible is highly dependent on context. Phrases like "bowing down," "lying down" and "falling down" are defined primarily by "bowing," "lying" and "falling"; there is also a great difference between a person descending, the Lord sending fire from heaven and someone handling an object, to offer a few examples. In a very general sense, though, "down" indicates a lowering from more internal spiritual states to more external ones. That's why the journey is described as going "down" to Egypt from Canaan, and people from all quarters go "up" to Jerusalem. It's also why the Lord comes "down" to us, which generally indicates a state of judgment.