'Skins' or 'hides' signify external things, because the hide is the outermost organ of an animal where its interiors extend, the same as with a person's dermis or skin. 'Skin' corresponds to truth or to falsity in the extremes. See Arcana Coelestia 1835, 10036, and Apocalypse Explained 386. 'Skin,' as in Job 19:26, means the natural degree a person has with him after death.

In Exodus 22:27, this signifies things that are relatively external. (Arcana Coelestia 9215)

In Exodus 34:29, this signifies the internal of the Word shining from the external. (Arcana Coelestia 10691)

In Job 19:20, this signifies being not entirely in falsities. (Apocalypse Explained 556[11])

In Jeremiah 13:23, this signifies that evil cannot change its nature. (Apocalypse Explained 780[5])

In Genesis 3:21, this signifies that the Lord instructed them in spiritual and natural good. (Arcana Coelestia 292)

In Genesis 27:16, this signifies the external truths of domestic good. (Arcana Coelestia 3540)

6267. 'And Joseph took them both, Ephraim in his right hand to Israel's left' means truth belonging to the understanding, to occupy the second place, 'and Manasseh in his left to Israel's right' means good belonging to the will, to occupy the first place. This is clear from the representation of 'Ephraim' as truth belonging to the understanding, and from the representation of 'Manasseh' as good belonging to the will, dealt with in 5354, 6222; and from the meaning of 'the right' as occupying the first place, and of 'the left' as occupying the second place, as is evident from what is the normal practice in life. The implications of all this will be discussed in what follows below.