9495. 'And two rings shall be on one side of it and two rings on the other side of it' means the marriage of truth to good and of good to truth. This is clear from the meaning of 'rings' as the joining together or marriage of good and truth, as above in 9493, a marriage that is reciprocal, that is to say, one in which truth is joined to good and good is joined to truth. Some idea of this marriage may be gained from the way in which heart and lungs are joined together. The heart joins itself to the lungs, and the lungs in turn join themselves to the heart; for the heart sends blood out from the right side of itself into the lungs, and the lungs in turn send it back into the heart, but into its left side, and so on unceasingly. Analogous to all this is the marriage of good to truth and of truth to good in heaven, where also the heart corresponds to good belonging to love, while the lungs correspond to truth belonging to faith, 3883-3896, 9300. The reason why two rings were to be on one side and two rings on the other side was that 'two' means a joining together, 1686, 5194, 8423, and 'side' means good which must be joined to truth, in order that the power referred to in the next paragraph may be derived from it.

5194. 'And it happened at the end of two years of days' means after the state when the joining together took place, that is to say, when the powers of the senses belonging to the exterior natural and those belonging to the interior natural were joined together, both of which powers are dealt with in the previous chapter. This is clear from the meaning of 'two years of days', that is, a period of two years, as a state involving a joining together; for 'two' means a joining together, 1686, 3519, while 'years' means states, as does 'days'. For the meaning of years' as states, see 487, 488, 493, 893, and for that of 'days', 27, 487, 488, 497, 2788, 3462, 3785, 4850. The reason 'two' means a joining together is that every single thing in the spiritual world, and consequently in the natural world, has two forces associated with it - goodness and truth. Good is an active inflowing force, truth a passive, recipient one. Also, because everything has these two forces associated with it, and because nothing can ever be brought forth unless the two are made one by becoming so to speak married to each other, a joining together is therefore meant by them.

[2] This type of marriage exists in every single thing within the natural order and its three kingdoms; without it nothing whatever can come into existence. For anything to come into existence within the natural order there needs to be heat and light, heat in the natural world corresponding to the good of love in the spiritual world, and light corresponding to the truth of faith. These two - heat and light - must act as one if anything is to be brought forth. If they do not act as one, as is the case in winter-time, nothing at all is brought forth. The same holds true on a spiritual level, as is quite evident with the human being, who has two mental powers - will and understanding. The will has been formed so that it may receive spiritual heat, that is, the good of love and charity, while the understanding has been formed so that it may receive spiritual light, that is, the truth of faith. Unless these two residing with a person make one nothing is brought forth, for the good of love devoid of the truth of faith cannot give definition and particular character to anything, while the truth of faith devoid of the good of love cannot bring anything into effect. So that the heavenly marriage may exist in a person therefore, or rather so that a person may be in the heavenly marriage, those two entities must make one in him. This explains why the ancients likened every single thing in the world, and every single thing within the human being, to a marriage, 54, 55, 568, 718, 747, 917, 1432, 2173, 2516, 2731, 2739, 2758, 3132, 4434, 4875, 5138. From all this one may see why it is that 'two' means a joining together.