681. And it became blood as though of a dead man, and every living creature in the sea died. This symbolizes the infernal falsity in those people by which every truth in the Word was extinguished, and so also every truth in the church and in faith.

Blood as though of a dead man, or blood oozing and mixed with pus, symbolizes infernal falsity. For blood symbolizes Divine truth, and in an opposite sense, that truth falsified (no. 379). But blood as though of a dead man symbolizes infernal falsity, inasmuch as death symbolizes the extinction of spiritual life, and so a dead man symbolizes something infernal (nos. 321, 525). That every living creature died means symbolically that every truth in the Word, in the church, and in faith was extinguished. For a living creature symbolizes the truth of faith; accordingly a living creature that has died symbolizes the truth of faith extinguished.

A living creature in the Word, or a soul when referring to a human being, symbolizes his spiritual life, which is also the life of his intellect; and because the intellect is formed by truths, and truths have to do with faith, therefore a living creature or soul symbolizes the truth of faith. That this is the symbolic meaning of a living creature or soul can be seen from many passages in the Word, and also from those that mention both soul and heart. The soul and heart plainly mean a person's life, but it is his life in consequence of his will and intellect, or spiritually speaking, in consequence of his love and wisdom, or of his charity and faith; and the life of the will springing from the goodness of love is meant by heart, while the life of the intellect springing from truths of wisdom or of faith is meant by soul. These are meant by soul and heart in Matthew 22:37, Mark 12:30, 33, Luke 10:27; Deuteronomy 6:5; 10:12; 11:13; 26:16; Jeremiah 32:41; and elsewhere. Also in passages which mention heart by itself and soul by itself.

The reason these terms are used comes from the correspondence of the heart with the will and love, and of the soul's action in the lungs with the intellect and wisdom, as may be seem in Angelic Wisdom Regarding Divine Love and Wisdom, Section Five, where this correspondence is discussed.

322. And power was given to them over a fourth of the earth, to kill. This symbolizes the destruction of all good in the church.

Since death means the extinction of a person's spiritual life, and hell his damnation, it follows that to kill here means to destroy the life of a person's soul. The life of the soul is spiritual life.

A fourth of the earth means, symbolically, all good in the church. The earth is the church (no. 285).

That a fourth means all good can be known only by someone who knows what numbers in the Word symbolize. The numbers two and four are said in application to goods, and they symbolize those goods. And the numbers three and six are said in application to truths, and they symbolize those truths. Thus a fourth part, or simply a fourth, symbolizes all good, while a third part, or simply a third, symbolizes all truth. Therefore to kill a fourth of the earth here means, symbolically, to destroy all good in the church.

Clearly he who sat on the pale horse was not given the power to kill a fourth part of the habitable earth.

[2] In addition, the number four in the Word symbolizes the union of goodness and truth.

That the number four has these symbolic meanings can, indeed, be confirmed from the Word, as by the four living creatures or cherubim in Ezekiel 1,3, 10; by the four chariots between two mountains in Zechariah 6:1; by the four horns in Zechariah 1:18ff.; by the four horns of the altar in Exodus 27:1-8, and Revelation 9:13; and by the four angels standing at the four corners of the earth, holding the four winds of the earth, in Revelation 7:1 (cf. Matthew 24:31). It can be confirmed, too, by the "visiting the iniquity to the third and fourth generation" in Numbers 14:18, and by the third and fourth generation mentioned elsewhere. By these passages in the Word and more, I say, one can confirm that the number four is said in application to goods, and that they symbolize those goods, and also the conjunction of goodness and truth. But because it would take a lengthy explanation of these passages to make this apparent, it is enough to briefly state that this is the meaning that the number four and a fourth part have in heaven.