3498. I know not the day of my death. That this signifies life in the natural, is evident from the signification of "day," as being state (n. 23, 487, 488, 493, 893, 2788); and from the signification of death," as being to rise again, or to be resuscitated into life (n. 3326); thus by the "day of death" is signified a state of resuscitation of life, or what is the same, life; that this is in the natural is evident, because life therein is here treated of. How the case herein is cannot be seen unless it is known how the case is with the life of the rational and with the life of the natural; or what is the same, with the life of the internal man and the life of the external. The life of the rational or internal man is distinct from the life of the natural or external man, and indeed so distinct that the life of the rational or internal man is possible apart from the life of the natural or external man; but the life of the natural or external man is not possible without the life of the rational or internal man, for the external man lives from the internal, insomuch that if the life of the internal man should cease, the life of the external would immediately become a nullity, because exterior things depend on interior ones as posterior things on prior, or as the effect on the efficient cause, for if the efficient cause should cease, the effect would immediately become a nullity. It is the same with the life of the external man relatively to the life of the internal.
[2] This may be plainly seen from man; for when man is in the world, or lives in the body, his rational is distinct from his natural, insomuch that he can be withdrawn from the external sensuous things of the body, and also in some degree from the interior sensuous things of his natural man, and can be in his rational, thus in spiritual thought. This appears better from the fact that when a man dies he altogether leaves the external sensuous things of the body, and then retains the life of his interior man; and also that although he indeed has with him the memory-knowledges of the external or natural memory, he nevertheless does not enjoy the use of them (see n. 2475-2477, 2479-2486). From this it is evident that the rational or internal man is distinct from the external; but during man's life in the body his rational does not appear to be distinct from his natural, because he is in the world, or in nature; and this being so, the life of the rational appears within the natural, insomuch that there does not appear to be any life in the rational unless it is in the natural at the same time. (That the rational appears to have life only insofar as the natural corresponds to it, may be seen above, n. 3493.) From this it may be seen that it is life corresponding in the natural which is signified by these words which Isaac spoke unto Esau, "I know not the day of my death;" for the rational is represented by Isaac, and the natural by Esau, both as to the good therein.