9861. 'It shall be square when doubled' means that which is righteous and perfect. This is clear from the meaning of 'square' as that which is righteous, dealt with in 9717. The reason why that which is also perfect is meant is that the breastplate was doubled, and that which is doubled implies all aspects of good and all aspects of truth. What is on the right side implies the good from which truth springs, and what is on the left implies the truth springing from good, 9495, 9604 (end), 9736, thus also the two perfectly joined to each other. This accounts furthermore for the meaning of 'two' as things joined together, 8423, also every single aspect of them, 9166, and their completeness as well, 9103.

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.