345. (v) The lowest spiritual separated from what is above brings this about. It was shown in Part III that the spiritual flows down from its sun even to the ultimates of nature through three degrees which are called celestial, spiritual and natural; that these three degrees are in man from creation, consequently from birth; and that they are opened according to his life. It was also shown that if the celestial degree which is the highest and inmost is opened, the man becomes celestial, if the spiritual degree which is the middle is opened, he becomes spiritual, but if only the natural degree which is the lowest and outermost is opened, he becomes natural. If man becomes natural only, he loves only corporeal and worldly things; and so far as he loves them, so far he does not love celestial and spiritual things, and does not look to God, and to that extent becomes evil. From these things it is clear that the lowest spiritual, which is called spiritual-natural, can be separated from its higher parts, and is separated in men from whom hell is formed. The lowest spiritual cannot of itself be separated from its higher parts and look towards hell either in beasts or in earths; it is possible only with men. From which it follows that the lowest spiritual, separated from what is above it, such as it is with those who are in hell, works to effect those evil uses on earth, spoken of above. That noxious things on earth derive their origin from man, and thus from hell, can be confirmed from the condition of the land of Canaan, described in the Word. When the children of Israel lived according to the Commandments, the earth yielded her increase, likewise the flocks and herds; and when they lived contrary to the Commandments, the land was barren and, as it is said, accursed; instead of harvests it yielded thorns and briars; flocks and herds miscarried, and wild beasts broke in. The same may be deduced from the locusts, and lice in Egypt.