6240. Shall be thine. That this signifies that they shall be in the rational, which is the internal, is evident from the fact that the internal celestial which is represented by Joseph, is in the rational (see n. 4286, 4963); and therefore by "being thine" is signified that they shall be in the rational, as before by "being mine" was signified that they should be in the natural, in which is the truth of the natural which is represented by Jacob (n. 6236). What the rational is shall be briefly told. The intellectual of the internal man is called "rational," but the intellectual of the external man is called "natural;" thus the rational is internal, and the natural is external; and they are perfectly distinct from each other. But a truly rational man is no other than he who is called a celestial man, and who has perception of good, and from good perception of truth; whereas he who has not this perception, but only the knowledge that a thing is true because he is so instructed, and from this has conscience, is not truly a rational man, but is an interior natural man. Such are they who are of the Lord's spiritual church. They differ from the celestial as the light of the moon differs from the light of the sun; and therefore the Lord appears to the spiritual as a moon, but to the celestial as a sun (see n. 1521, 1529-1531, 4060, 4696).
 Many in the world suppose that a rational man is one who can reason acutely about many things, and so join his reasonings together that his conclusions may appear like truth; but this is found in the very worst of men, who are able to reason skillfully and persuade that evils are goods, and that falsities are truths; and the reverse. But he who reflects can see that this is vicious phantasy, and not what is rational. The rational consists in inwardly seeing and perceiving that good is good, and from this that truth is truth; for the sight and perception of such men are from heaven. That they who are of the Lord's spiritual church are interiorly natural, is because they only acknowledge as truth that which they have received from their parents and masters, and afterward have confirmed in themselves; and do not see inwardly, and perceive, whether it is true from any other source than that they have confirmed it in themselves. It is otherwise with the celestial; and it is from this that the latter are rational, but the former interiorly natural. The internal celestial which is represented by Joseph, is in the rational; whereas the spiritual good which is represented by Israel, is in the interior natural (n. 4286); for it is the spiritual who are represented by Israel, and the celestial who are represented by Joseph.