572. That they should kill the third part of men, signifies of depriving themselves of all understanding of truth, and thus of spiritual life. This is evident from the signification of "to kill," as being to deprive of spiritual life (See above, n. 547); and from the signification of "men," as being the understanding of truth (See also above, n. 546, 547); "the third part," in reference to truths, means all (See above, n. 506); so here "to kill the third part of men" signifies the deprivation of all understanding of truth. It means to deprive themselves, because those who become sensual through evils of life and falsities of doctrine deprive ¹ themselves, by reasonings from fallacies, of the understanding of truth, but not others, except such as are sensual. They thus deprive themselves of spiritual life, because man has spiritual life through his understanding, for he becomes a spiritual man in the measure in which his understanding is opened and permits itself to be enlightened by means of truths. But it is by means of truths from good that the understanding is opened, not by means of truths without good; for man thinks truth so far as he lives in the good of love and charity. Truth indeed is the form of good, and all good with man is of his will, and all truth is of his understanding; therefore the good of the will presents its form in the understanding, and the form itself is thought from the understanding which is from the will.

Fusnotat:

8230. 'And covered the chariots and the horsemen, and all Pharaoh's army' means that their own falsities hid them. This is clear from the meaning of 'covering' as overwhelming, thus hiding; and from the meaning of 'Pharaoh's chariots and horsemen' as doctrinal teachings upholding falsity, and reasonings that fight against truths and forms of good, in general actual falsities arising from evil. For the meaning of 'chariots' as doctrinal teachings upholding falsity, and of 'horsemen' as reasonings belonging to a perverted understanding, see 8146, 8148. For their fighting against truths and forms of good, see 8215.