An angel once said to me, "If you wish to see clearly what faith is and what charity is, and thus what faith separate from charity is, and what it is when conjoined with charity, I will make it very clear to you." I answered, "Make it clear." He said, "Instead of faith and charity, think of light and heat, and you will see clearly. Faith in its essence is the truth of wisdom, and charity in its essence is the affection of love; and in heaven the truth of wisdom is light and the affection of love is heat. The light and heat in which angels live are in essence nothing else. From this you can see clearly what faith is when separated from charity and what faith is when conjoined with charity. Faith separated from charity is like the light of winter, and faith conjoined with charity is like the light of spring. Wintry light, which is light separate from heat, because it is joined with cold, wholly strips the trees of their leaves, kills the grass, hardens the earth, and freezes the waters. But the light of spring, which is light joined with heat, causes the trees to put forth leaves, and then flowers, and finally fruit; it so opens and softens the earth that it may bring forth grasses, herbs, flowers, and it so melts the ice that the waters flow from their fountains. [2] It is precisely the same with faith and charity. Faith when separated from charity makes all things dead, while faith joined with charity makes all things alive. This making alive and making dead can be seen to the life in our spiritual world, because here faith is light and charity is heat. Where faith is joined with charity, there are paradisal gardens, flower-beds, and grass-plots with a native charm according to that conjunction. But where faith is separated from charity, there is not even grass, and where there is any green it is from briers and thorns." Not far from us at this time were some clergymen, whom the angel called justifiers and sanctifiers of men by faith alone, and also dealers in mysteries. To these we said the same things, and made them so clear that they saw their truth; but when we asked them if it was not so, they turned away and said, "We did not hear you." We then shouted to them, saying, "Then hear us yet again." But they put both hands to their ears and called out, "We do not wish to hear you." [3] After hearing this I talked with the angel about faith alone, saying that it had been granted me to know by living experience that that faith is like the light of winter. And I told him that for several years spirits of various beliefs had passed by me, and that whenever those who separated faith from charity came near me, such a coldness invaded my feet and gradually my loins and finally my chest, that I hardly knew otherwise than that the whole vitality of my body was about to become extinct; and indeed this would have come to pass if the Lord had not driven these spirits away and set me free. To me it seemed wonderful that these spirits, as they acknowledged, had in themselves no sense of coldness; and I therefore likened them to fishes under ice, which have no feeling of cold because their life and their nature therefrom are essentially cold. It then became clear that the cold of these spirits emanated from the fatuous light of their faith, as the fatuous and cold light often seen by travelers arises from marshy and sulphurous places in midwinter after sunset. Such spirits may be compared to the icebergs that are torn from their places in the northern regions, and carried about on the ocean, of which I have heard it said that when they come near a ship, all who are on board begin to shiver with cold. So companies of spirits who are in faith separated from charity may be likened to such icebergs, or, if you please, may be called icebergs. It is well known from the Word that faith apart from charity is dead; but I will explain the cause of its death. Its death is from cold. It dies from cold like a bird in a severe winter. First its sight fails, and at the same time its power to fly; and then its power to breathe; and finally it falls headlong from the tree into the snow and is buried.