The "midst" of something in the Bible represents the thing that is most central and most important to the spiritual state being described, the motivation that drives everything else. In general this will be something we love or feel, because at the core of things we are what we love; our loves define us.

(Odkazy: Apocalypse Revealed 44, 90, 268; Arcana Coelestia 2252, 2940, 10153, 10365, 10557, 10635, 10641)

9634. 'And you shall make the boards for the dwelling-place' means the good supporting that heaven. This is clear from the meaning of 'the boards' as good that lends support, dealt with below; and from the meaning of 'the dwelling-place' as the middle or second heaven, dealt with in 9594. The reason why good that lends support is meant by 'the boards' is that they were made from wood and supported the curtains both of the dwelling-place and of the tent, as well as the two coverings over them. Consequently supports are meant by 'the boards'; and since they were made from wood they meant ones that were formed from good, for everything made from wood means some form of good, even to actual houses built from wood, 3720. The particular nature of the good is meant by 'shittim wood' from which they were built. Since all representatives on the natural level resemble the human form and carry the same meaning as the parts of it they resemble, 9496, so it is with the boards of the dwelling-place. They correspond to the parts consisting of muscle or flesh in the human being which lend support to encompassing membranes and skin. 'Flesh' furthermore means good, 7850, 9127. This explains why the boards were made from shittim wood, by which the good that supports heaven is meant, 9472, 9486, and also why they were overlaid with gold, by which also good is meant.