208. 5. From this point on, the spiritual meaning of the Word will be given only to people who have genuine truths from the Lord. The reason for this is that none of us can see the spiritual meaning except with the help of the Lord alone, provided we have divine truths from him. The Word's spiritual meaning deals solely with the Lord and his kingdom. The spiritual meaning is the one with which his angels engage in heaven. It is his divine truth there.
It is possible for us to violate the Word's spiritual meaning if we are involved in the study of correspondences and we try to explore that meaning with our own intelligence. With just a few correspondences we know, we could pervert the spiritual meaning and even divert it to support something false. This would be a violent attack on divine truth, and so on heaven, where divine truth dwells. For this reason if any of us try on our own, without the Lord, to open the spiritual meaning, heaven closes and we either see nothing true or we become spiritually insane.
Another reason [why the spiritual meaning will be given only to people who have genuine truths from the Lord] is that the Lord teaches us all through the Word, using the concepts that we already have. He does not pour new concepts directly into us. Therefore if we do not already have divine truths, or we have only a few truths along with some falsities, we are capable of falsifying truths, much the way any heretic does with the Word's literal meaning. To prevent any of us from getting into the spiritual meaning and perverting the genuine truth that belongs to it, the Lord has placed safeguards on that meaning, which are referred to in the Word as angel guardians.