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)

11. Whatsoever things he saw signifies their understanding enlightened. This is evident from the signification of "seeing," as being to understand (See Arcana Coelestia, n. 2150, 2325, 2807, 3764, 3863, 3869, 4403-4421, 10705); here, to understand from enlightenment, because the things of the church and of heaven are treated of, which are not understood and perceived except from enlightenment; for things of the church and of heaven, which are called spiritual things, do not enter into man's understanding, except by means of the light of heaven, and the light of heaven enlightens the understanding. For this reason the Word, in which are contained the things of the church and of heaven, cannot be understood except by one who is enlightened, and those only are enlightened who are in the affection of truth from good, thus who are in love to the Lord and in charity towards the neighbor. This good is spiritual good, with which and from which is the light of heaven, which enlightens.