Arcana Coelestia #3326
3326. 'Esau said, Behold, I am going to die' means that [the good of the natural] would after that rise again. This is clear from the representation of 'Esau' as the good of the natural, dealt with in 3302, 3322, and from the meaning of 'dying' as the final phase of a state when something ceases to exist, dealt with in 2908, 2912, 2917, 2923. And since the end of the previous state is the beginning of the next, 'going to die', like 'being buried', here means rising again after that. For 'being buried' means rising again, see 2916, 2917, 3256. His rising again after that implies that good will come to have priority and dominion over truth, after truth in the short term has apparently had priority, dealt with above.
Numbers 8:16-18
16
For they are wholly given to me from among the children of Israel; instead of all who open the womb, even the firstborn of all the children of Israel, I have taken them to me.
17
For all the firstborn among the children of Israel are mine, both man and animal. On the day that I struck all the firstborn in the land of Egypt, I sanctified them for myself.
18
I have taken the Levites instead of all the firstborn among the children of Israel.