Arcana Coelestia#8714
8714. 'Rulers of fifties' means first and foremost truths that are intermediary. This is clear from the meaning of 'rulers' as first and foremost truths, as above in 8712, 8713; and from the meaning of 'fifties' as intermediary truths, that is to say, those which lie between truths springing from good that reside in the second degree and those that reside in the third, meant by 'rulers of hundreds' and 'rulers of tens'. The reason why 'fifties' are intermediary truths is that 'fifty' means either much or something, just as 'five' does (for the meaning of 'five' as much, see 5708, 5956, and for its meaning something, 4638, 5291), and therefore when fifty is mentioned between a hundred and ten, intermediaries are meant. Intermediary truths are those which extend towards one part from another, that is, exist between those in a prior degree and those in a posterior degree, in order to link such degrees together.
1 Kings第6章:23-25
23
In the oracle he made two cherubim of olive wood, each ten cubits high.
24
Five cubits was the one wing of the cherub, and five cubits the other wing of the cherub: from the uttermost part of the one wing to the uttermost part of the other were ten cubits.
25
The other cherub was ten cubits: both the cherubim were of one measure and one form.