4
너와 네 모든 떼와 너와 함께한 백성이 다 이스라엘 산에 엎드러지리라 내가 너를 각종 움키는 새와 들짐승에게 붙여 먹게 하리니
Plants in general stand for facts and ideas, so it makes sense that a forest in the Bible represents a collection or system of external, factual, ideas. This can be a collection on its own, or it can be the collected external knowledge of a church. It can also represent the level of a person's mind where he or she deals with such systems of ideas.
(References: Arcana Coelestia 9011 [1,3-7], 9642 [3,23]; The Apocalypse Explained 650 [26,49])