Apocalypse Explained # 664
664. And after three days and a half.- That this signifies when completed, thus the end of the old church, and the beginning of a new church, is evident from the signification of three days and a half, as denoting fulness or completion at the end of the old church, when there is the beginning of a new church, concerning which see above (n. 658). The reason why it is said, after three days and a half, is, that days, in the Word, signify states, here, the last state of the church. For all times, in the Word, as hours, days, weeks, months, years, and ages, signify states in the Word, as in this case, the last state of the church, when there is no longer any good of love or truth of faith remaining. Because days signify states, and since in the first chapter of Genesis the establishment of the Most Ancient Church is treated of which was accomplished successively from one state to another, therefore it is said there that there was evening and there was morning the first, the second, the third, the fourth, the fifth, and sixth days, unto the seventh, when it was completed (Genesis 1:5, 8, 13, 19, 23, 31), and the days there do not mean days, but the successive states of the regeneration of men at that time, and the consequent establishment of the church with them. So also elsewhere in the Word.
Arcana Coelestia # 3744
3744. From this one may now see what heaven is like and why it is called the Grand Man. Yet the variations there in the life of good and truth are countless; and each variation is determined by the way in which life from the Lord is received. Those variations are interrelated in exactly the same way as the organs, members, and viscera in the human being, all of which are ever-varying recipient forms of life from the soul, or rather from the Lord through the soul. Yet for all their variety they nevertheless together constitute one human being.