Arcana Coelestia#9893
9893. 'And put them on the two shoulders of the ephod, below' means the preservation of good and truth in the lowest part of heaven. This is clear from the meaning of 'putting onto the shoulders' as preserving with all exertion and power, as above in 9887. 'Below' there means the lowest part of heaven, where good and truth exist in a natural form, see just above in 9891.
Arcana Coelestia#9887
9887. 'And put them onto the shoulders of the ephod' means the support given thereby to heaven, and the preservation of the good and truth there by all exertion and power. This is clear from the meaning of 'putting onto the shoulders of the ephod' as the support given to good and truth in the heavens, and the preservation of them. Regarding that support, see immediately above in 9886; and regarding that preservation by all exertion and power, 9836. The reason why the support given to heaven by means of the Divine emanating from the Lord and also the preservation of the good and truth there are meant is that 'the breastplate', which was tied to the shoulder-pieces of the ephod by means of the slender ropes, and thereby supported, means the Divine Truth emanating from the Lord's Divine Good, 9823, and so means all the forms of good and the truths in their entirety which make heaven, 9879.