7351. Behold I will smite all thy border with frogs. That this signifies reasonings from mere falsities, is evident from the signification of "frogs," as being reasonings; that they are from mere falsities is signified by their "creeping forth from the river," as presently follows (that the "river of Egypt" denotes falsity, see n. 6693, 7307), and because it is said that "all the border should be smitten with them." By these words is also signified that the reasonings shall not be from falsified truths, but from mere falsities, because reasonings from falsified truths are finally turned into blasphemies against truth and good; and moreover the truths themselves reject the falsification, because they cannot be together with falsities; and so long as they are, they fight with them, and at last loosen and separate themselves from them. Hence it is that after a man has falsified truths, he at last wholly denies them; otherwise falsities would have dominion over truths. From this it is that after the evil in the other life have been cast into hell, they are not allowed to reason from falsified truths, but from mere falsities.
 That "frogs" denote reasonings from falsities, is evident in John:
I saw out of the mouth of the dragon, and out of the mouth of the beast, and out of the mouth of the false prophet, three unclean spirits, like frogs; for they are the spirits of demons, working signs to go forth unto the kings of the earth, and of the whole world, to gather them together unto the war of the great day of God Almighty (Rev. 16:13-14);
that "frogs" denote reasonings from falsities against truths, is plain from the details of this passage, for it is said that "they went out of the mouth of the dragon, out of the mouth of the beast, and out of the mouth of the false prophet;" also that "they went forth unto the kings of the earth, to gather them together unto war." The "kings of the earth" denote the truths of the church (that "kings" denote truths, and in the opposite sense falsities, see n. 1672, 1728, 2015, 2069, 3009, 3670, 4575, 4581, 4966, 5044, 5068, 6148; and that the "earth" denotes the church, n. 662, 1067, 1262, 1733, 1850, 2117, 2118, 3355, 4447, 4535, 5577; also that "war" denotes spiritual combat, n. 2686, thus combat against the truths and goods of faith). From this it is plain that "frogs" denote reasonings from falsities against truths.
 And in David:
He turned their waters into blood, and slew their fish; He caused frogs to creep forth on their land, in the chambers of their kings (Ps. 105:29-30);
it is said "in the chambers of their kings" because there is meant reasoning against truths from falsities; "the chambers of kings" denote interior truths, and in the opposite sense interior falsities. (That "kings" denote truths, and in the opposite sense falsities, see just above.)