The foot, as in Deuteronomy 33:3, signifies an inferior principle. To set the right foot on the sea and the left on the earth, as in Revelation 10:2, signifies that the Lord has the universal church under His intuition and dominion.

(Референце: Apocalypse Explained 10 [2]; Arcana Coelestia 2714)

2713. That 'a wilderness' means that which is obscure in comparison is clear from the meaning of 'a wilderness' as that which is obscure, when it has reference to the spiritual man in comparison with the celestial man, dealt with above in 2708.