10
And Moses commanded them, saying, At the end of every seven years, in the solemnity of the year of release, in the feast of tabernacles,
Deuteronomy 31:10
Twenty-eight
In Exodus 26:2, this signifies what is holy in conjunction, because this number comes from multiplying seven by four, and seven signifies what is holy, and four signifies conjunction. (Arcana Coelestia 9600)
