'Forty' represents completeness because 'four' and 'ten' both mean what is complete. Forty is the product of four and ten. Compound numbers have a meaning similar to the simple numbers which compose them, and all numbers in the Word represent spiritual realities.

(Odkazy: Arcana Coelestia 9437; Exodus 24:18)

Fortifications denote truths to the extent that they defend good. Fortifications signify defense against falsities and evils.

(Odkazy: Arcana Coelestia 7297)