[2] The situation here is that those belonging to the Lord's spiritual kingdom cannot flow into the celestial kingdom since this is higher or more internal and the spiritual kingdom is lower or more external; for what is more external or lower cannot flow into what is higher or more internal, 5259, 5779. However it sometimes happens that those in a lower heaven seek to go up into a higher heaven; they seek to do so because of a wrong desire that has its origin in pride, dominion, or envy. Those who have that desire and venture up are also let in now and again; but then they suffer badly. They are seized by anxiety, at length by pain, and also by blindness; their intelligence is destroyed, and their happiness. On account of all this they cast themselves down from there as if they are about to die, and do not revive until they have been cast down out of heaven.

[3] Such is the fate of those belonging to a lower heaven who force their way through to a higher heaven from a desire born of pride, dominion, or envy. The reason why they suffer badly is that the good of love in the higher heaven is comparatively like a devouring fire, and the truth of faith there is like fiery light blinding the sight of those coming up from below. These are the things that are meant in the internal sense by the Israelite people's being forbidden to touch Mount Sinai where Jehovah was. A similar fate would await those belonging to the celestial kingdom if they perhaps tried to go up above to the Divine. It also awaits those who are below heaven if they desire to go up into heaven; they too suffer badly, see 4225, 4226, 4299, 5057, 5058.