Arcana Coelestia # 9636
9636. 'Ten cubits shall be the length of a board' means that this good is the all in all. This is clear from the meaning of 'ten' as all, dealt with in 4638, 9595; and from the meaning of 'the length' as good, dealt with in 1613, 8898, 9487, 9600, at this point good that lends support, which is the good of merit, this good being meant by the boards of the dwelling-place that were made from shittim wood, 9634, 9635. The reason why this good is the all in all of heaven is that it is the Divine Good itself, which makes the heavens and supports them, 9486. The good that resides with angels is real good, for all good comes from the Lord. Good from any other source is not good.
Arcana Coelestia # 9600
9600. 'The length of one curtain shall be twenty-eight cubits' means the holiness of the truth derived from good. This is clear from the meaning of 'the length' as good, dealt with in 1613, 8898, 9487; from the meaning of 'curtain' as interior truth of faith, which belongs to the new understanding, dealt with above in 9595; and from the meaning of 'twenty-eight' as the holiness of being joined together. 'Twenty-eight' has this meaning because this number is the product of seven multiplied by four, and 'seven' means that which is holy, 433, 716, 881, 5265, 5268, and 'four' a joining together, 1686, 8877. For multiple numbers are similar in meaning to the simple ones that are their factors, 5291, 5335, 5708, 7973. From all this it is evident that 'the length of one curtain shall be twenty-eight cubits' means the holiness of the truth derived from good.