In Genesis 14:1, kings signify apparent goods and truths having the upper hand. In the next verse, they stand for the dominant evils and falsities against which the Lord fought as he passed He grew up on Earth.

In Genesis 14:3, we see that these evils and falsities were unclean; and in Genesis 14:4, that they burst forth later. (Arcana Coelestia 1661-1664).

In Genesis 14:14-15, this signifies that the Lord gained victory over them the evils represented earlier in the chapter. (Arcana Coelestia 1711-1715)

In Isaiah 33:17, a king signifies seeing genuine truth. (Apocalypse Explained 304[31])

In Revelation 9:11, a king signifies one who is in truth from an affection for what is good, and abstractly that truth itself -- here, in the opposite sense. (Apocalypse Revealed 440)

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.