269. And a rainbow was round about the throne in aspect like an emerald, signifies the appearance of Divine truth in the heavens about the Lord. This is evident from the signification of "a rainbow in aspect like an emerald," as denoting the appearance of Divine truth in its circumference; for "a rainbow round about the throne" signifies Divine truth round about; "in aspect like" signifies appearance. The appearance was like an emerald, because it had reference to the Last Judgment; for the color of this stone is green, and "green" signifies truth obscured. Divine truth in its brightness appears either of the color of heaven, or in various colors in beautiful order like a rainbow; but when obscured it appears of the color of an emerald. The heaven that was obscured was the heaven called "the former heaven," on which judgment was to be executed, and which was about to perish (See Revelation 21:1). On this account "a rainbow round about like an emerald" is mentioned. "Rainbow" signifies Divine truth in the heavens in its order and consequently in its beauty, because there are infinite varieties of truth from good in the heavens, and when these are represented by colors, they present the aspect of a most beautiful rainbow. For this reason "a rainbow" was made the sign of the covenant after the flood (Genesis 9:12-17). (That there are infinite varieties in the heavens see in the work on Heaven and Hell 56, 405, 418, 486; and in the small work onThe Last Judgment 13; and in Arcana Coelestia 684, 690, 3744, 5598, 7236, 7833, 7836, 9002; that colors in heaven appear from the light there, and that they are modifications and variegations of the light, n. 1042, 1043, 1053, 1624, 3993, 4530, 4742, 4922; and that the colors appear various according to the varieties of the states of truth from good, and thence of intelligence and wisdom, n. 4530, 4677, 4922, 9466; that rainbows are seen in heaven, and whence and what they are, n. 1042, 1043, 1623-1625)

1053. That 'and the bow will be in the cloud' means the state of that man is clear from what has been stated and shown already about the bow in the cloud, that is to say, in the next life a person or soul is known among angels from his sphere; and as often as it pleases the Lord that sphere is represented by means of colours like those of the rainbow, variously according to each person's state as to faith in the Lord and thus respectively as to goods and truths of faith. In the next life colours present themselves to view, which on account of their brilliance and splendour are immensely superior in beauty to colours seen with the eyes on earth. Each colour represents something celestial or spiritual.

[2] Those colours derive from the light in heaven, and from the variegation of spiritual light, as stated above. Indeed angels live in light so bright that the light of the world is in comparison no light at all. The light of heaven in which angels live, compared with the light of the world, is as the light of the sun at midday to the light of a candle that is put out and ceases to give any light at all when the sun rises. In heaven there is celestial light and there is spiritual light. Let me compare the two by saying that celestial light is as the light of the sun, while spiritual light is as the light of the moon. But all manner of variation exists depending on the state of the angel receiving the light. The same applies to colours since they are a product of the light. In the heaven of celestial angels the Lord Himself is the Sun, and in the heaven of spiritual angels the Moon. To people who have no conception of the life which souls lead after death these matters are unbelievable. They are nevertheless completely true.