1004. Of that great day of God Almighty, signifies the last state of the church, when the Lord comes and the Last Judgment takes place. This is evident from the signification of "the great day of God Almighty," as being the last state of the church, when the Lord comes and the Last Judgment takes place (see n. 413). Frequent mention is made in the Word of "the great day," "the day of Jehovah," "the day of anger and wrath," "the day of vengeance," "the terrible day;" and this means in these passages the last state of the church, and then the coming of the Lord and the Last Judgment.
(Continuation respecting the Sixth Commandment)
 True conjugial love cannot be given except between two, like the Lord's love towards heaven, which is one from Him and in Him, or towards the church, which like heaven is one from Him and in Him. All who are in the heavens and who are in the church must be one through mutual love from love to the Lord. An angel in heaven and a man in the church who does not thus make one with the rest is not of heaven nor of the church. Moreover, in the whole heaven and in the whole world there are two things to which all things have reference; these two are called good and truth, from which, when joined into one, all things in heaven and in the world have had existence and subsistence. When these are one, good is in truth and truth is in good, and truth is of good and good is of truth; thus one acknowledges the other as its mutual and reciprocal, or as an agent recognizes its reagent, each in its turn. This universal marriage is the source of conjugial love between husband and wife. The husband has been so created as to be the understanding of truth, and the wife so created as to be the will of good, and thus the husband to be truth and the wife good; thus that both may be truth and good in form, which form is man, and the image of God. And because it is from creation that truth should be of good, and good of truth, thus mutually and reciprocally, therefore it is impossible for one truth to be united to two diverse goods, or the reverse; neither is it possible for one understanding to be united to two diverse wills, or the reverse; neither for one person who is spiritual to be united to two diverse churches; neither in like manner for one man (vir) to be inmostly united to two women. Inmost union is like that of soul and heart; the soul of the wife is the husband, and the heart of the husband is the wife. The husband communicates and conjoins his soul to the wife by actual love; it is in his seed; and the wife receives it in her heart, and from this the two become one, and then each and all things in the body of the one look to their mutual in the body of the other. This is genuine marriage, which is possible only between two. For it is from creation that all things of the husband, both of his mind and of his body, have their mutual in the mind and in the body of the wife; and thus the most particular things look mutually to each other and will to be united. From this looking and conatus conjugial love exists.  All things in the body, which are called members, viscera, and organs, are nothing but natural corporeal forms corresponding to the spiritual form of the mind; from this each and all things of the body so correspond to each and all things of the mind that whatever the mind wills and thinks the body at its command instantly brings forth into act. When, therefore, two minds act as one their two bodies are potentially so united that they are no more two but one flesh. To will to become one flesh is conjugial love; and such as the willing is, such is that love.  It is allowed to confirm this by a wonderful thing in the heavens. There are married pairs there in such conjugial love that the two can be one flesh, and are one whenever they wish, and they then appear as one man. I have seen and talked with such; and they said that they have one life, and are like the life of good in truth and the life of truth in good, and are like the pairs in man, that is, like the two hemispheres of the brain enclosed in one membrane, the two ventricles of the heart within a common covering, likewise the two lobes of the lungs; these, although they are two, yet are one in regard to life and the activities of life, which are uses. They said that their life so conjoined is full of heaven, and is the very life of heaven with its infinite beatitudes, for the reason that heaven also is such from the marriage of the Lord with it, for all the angels of heaven are in the Lord and the Lord in them.  Furthermore, they said that it is impossible for them to think from any intention about an additional wife or woman, because this would be turning heaven into hell, consequently if an angel merely thinks of such a thing he falls from heaven. They added that natural spirits do not believe such conjunctions as theirs to be possible, for the reason that with those who are merely natural there is no marriage from a spiritual origin, which is of good and truth, but only a marriage from a natural origin; therefore there is no union of minds, but only a union of bodies from a lascivious disposition in the flesh; and this lust is from a universal law impressed upon and thus implanted in everything animate and inanimate from creation. The law is that everything in which there is force wills to produce its like and to multiply its kind to infinity and to eternity. As the posterity of Jacob, who were called the sons of Israel, were merely natural men, and thus their marriages were not spiritual, but carnal, so they were permitted on account of the hardness of their hearts to take several wives.