6314. As it is with light, so it is with the heat that is vital to a person's existence. In no way at all does that vital heat originate in the heat radiated by the sun in the world; rather, it originates in spiritual heat, which is love and radiates from the Lord. This heat is what angels have. Consequently the amount of vital heat a person has is determined by the amount of love he has. His body however is warmed by worldly heat, as is his sensory awareness within it; yet vital heat flows into that worldly heat and imparts life to it. Differences in the purity and intensity of this heat are akin to variations in the clarity of the light. This vital heat is what one should understand by the holy fires mentioned in the Word, and therefore heavenly loves are meant by those fires. But in a contrary sense that worldly heat is what one should understand by the fires of hell, and therefore hellish loves and the desires that go with them are meant when these fires are mentioned in the Word.

6651. 'And a new king arose over Egypt' means separated factual knowledge, which is opposed to the Church's truths. This is clear from the representation of Pharaoh, to whom 'king' refers here, as factual knowledge in general, dealt with in 6015. The word 'king' is used because in the genuine sense 'king' means truth, 1672, 2015, 2069, 3670, 4581, 4966, 5044, 6148, and in the contrary sense falsity; and since 'king' refers here to Pharaoh, false factual knowledge is meant, that is, factual knowledge that is opposed to the Church's truths. This also explains why the expression 'new king' is used, for the one who lived in Joseph's time represented factual knowledge that accorded with the Church's truths. For the meaning of 'Egypt' as factual knowledge, here that knowledge in particular, see above in 6638.