To be behind, (Genesis 18:10), signifies not to be joined together, but at his back. What is separated from any one, this is represented in another life, by a kind of rejection, as it were, to the back. (Arcana Coelestia 2196)

In Genesis 19:17, this signifies being away from doctrinal things. (Arcana Coelestia 2417)

In Genesis 16:13, Here, behind, or after, signifies within or above, or an interior or superior principle.

In Revelation 1:10, 'behind' signifies that people who do not approach the Lord only (Apocalypse Revealed 42)

(Odkazy: Arcana Coelestia 1955)

153. And His feet like burnished brass, signifies the ultimate of Divine order, which is the natural, full of Divine love, as is evident from what is said and shown above n. 69, where similar words occur. As what is written to the angel of this church treats of the internal of the church, which is spiritual, and its external, which is natural, that they must make one (See above, n. 150), so it is prefaced by these things respecting the Lord, from whom is everything of the church, "These things saith the Son of God, that hath His eyes as a flame of fire, and His feet like unto burnished brass;" for in respect to man, "eyes" signify the internal, which is spiritual, and "feet" the external, which is natural; but in respect to the Lord, "eyes" and "feet" signify the Divine things from which are the internal and external with man.