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)

3237. 'And her name was Keturah' means the essence of this Divine Truth. This is clear from the meaning of the word 'name' as the essential nature, and of 'calling by name' as knowing the essential nature, dealt with in 144, 145, 1754, 1896, 2009. Now because one does not speak of the nature of what is Divine but of the Esse of this, 'name' here means the essence, indeed the essence of Divine Truth - Divine Truth being meant here by 'the wife', to whom 'her' refers. For here 'the wife' means Divine Truth, see just above in 3236. From this it is evident what 'Keturah' in general embodies.