In Genesis 18:27, this signifies the humility of the Lord's human as to its quality. (Arcana Coelestia 2265)

In Exodus 9:8, this signifies lustful falsities excited by the presence of infesting spirits. (Arcana Coelestia 7519, Apocalypse Explained 962[8])

In Ezekiel 27:30, this signifies something condemned, because the fire from which they come signifies infernal love. (Apocalypse Explained 441)

In Jeremiah 6:26, this signifies mourning because of the destruction of good and truth in the church. (Arcana Coelestia 637[9])

(References: Apocalypse Explained 1175)

In Exodus 28:18, this signifies the celestial love of truth. (Arcana Coelestia 9868)

Emerald, purple, broidered-work, fine linen, coral, and agate (Ezekiel 27:16), signify the knowledges of good.

(References: Arcana Coelestia 1232)