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.

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

'Mizraim' signifies the same thing as Egypt.

(références: Arcana Coelestia 1165)