In Exodus 26:26, this signifies the power of truth from good, as found in the good of merit, which is the Lord's alone. (Arcana Coelestia 9662)

In Exodus 26:28, this signifies the power of truth looking toward the interiors which are in light and also to the exteriors where truth is obscure. (Arcana Coelestia 9663, 9664)

In Exodus 26:29, this signifies the primary power of good from which all other powers are extended. (Arcana Coelestia 9666)

Bars, as in Lamentations 2:9, signify doctrinal teachings.

(Odkazy: Arcana Coelestia 402)

9663. 'Five for the boards of one side of the dwelling-place' means when it looks towards the more internal parts of heaven, where truth dwells in light. This is clear from the meaning of 'five' as all on that side, dealt with in 9604; from the meaning of 'the boards' as the forms of good which lend support, dealt with in 9634; and from the meaning of 'side of the dwelling-place' as the quarter in heaven to which attention is directed, for 'the dwelling-place' is heaven, 9596, and 'side' the quarter to which attention is directed. The reason why towards the more internal parts where truth dwells in light, thus towards the south, is meant is that the same phrasing regarding boards is used three times - the third or last relating to the boards 'at the two legs towards the sea' - and three sides are mentioned, the first being towards the south, verse 18, the second towards the north, verse 20, and the third towards the sea, verse 22, 'towards the south' meaning towards the more internal parts where truth dwells in light, see 9642, 'towards the north' towards the more external parts, where truth dwells in obscurity, 9648, and 'towards the sea' towards the parts where good dwells in obscurity, 9653.