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.

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

The children of Israel represent 'lamentation' through various things which signified evil of the church among them. When they were punished for their actions, they then represented repentance and humiliation.

(Odkazy: Apocalypse Revealed 492)