found this while researching feet in religious iconography. have fun! apologies, I cannot find the website this is originally from.
As the Word in the letter is natural, and by the feet are signified natural things, therefore the ultimate of the Word, like the ultimate of the church, is called the place of the feet of Jehovah, and also
the soles, which are under the feet, denote the ultimate things of nature. That under the feet here denotes the ultimate sense of the Word, which is the sense of the letter, is because it is said of the Divine truth or Word, which is from the Lord, and which is the Lord, as can be seen from what goes before; and the ultimate of truth Divine, or the Word, is such as is the sense of the letter, which is natural, because for the natural man. That the sense of the letter contains within it an internal sense, which is relatively spiritual and celestial, is evident from all that has been hitherto shown about the Word. but the more worldly and bodily a man is, the less he apprehends this, because he does not suffer himself to be raised into spiritual light, and thereby to see what is the nature of the Word; namely, that in the letter it is natural, and in the internal sense spiritual; for the nature of lower things, down to ultimate ones, can be seen from the spiritual world, or from the light of heaven
the glory of Lebanon shall come unto thee, the fir-tree, the pine-tree, and the box together; to adorn the place of My sanctuary; and I will make the place of My feet honorable (Isa. 60:11, 13)