Cities of the mountain and cities of the plain (Jeremiah 33:13) signify doctrines of charity and faith.

(References: Arcana Coelestia 2418)

'To cover under wings,' as in Psalms 91:4, signifies guarding with the divine truth, which is the divine spiritual. 'Wings' signify spiritual truths. 'Wings,' when related to the Lord, signify the divine spiritual. In the opposite sense, 'wings' relate to falsities and rationalizations from them.

(References: Apocalypse Revealed 245; Deuteronomy 32:10-12; Divine Providence 20-25; Ezekiel 16:8; Malachi 4:2; Matthew 23:37; Psalms 17:8, 26:8, 57:2, 63:8)