327. After these experiments, I said to the bystanders: "From these three proofs of experience, you have seen the nature of the distinction between the spiritual and the natural, and also the reason why the natural man is not seen by the spiritual, or the spiritual man by the natural, and this despite the fact that as to affections and thoughts and as to presence therefrom, they are consociates." Then, addressing the Chief Teacher, I said, "This is the reason why, when I was on the way, I was now seen by you and now not seen." After this, from a higher heaven was heard a voice addressed to the Chief Teacher, saying, "Come up hither." He then went up, and after returning, he said that the angels, like himself, had not previously known the differences between the spiritual and the natural, and this because no opportunity for comparing them in a man who was in both worlds at the same time, had hitherto been afforded, and in the absence of comparison, these differences cannot be known.