Here is an excerpt from Swedenborg's "Arcana Coelestia" that helps explain the inner meaning of this chapter:

AC 4425. The subject here treated of in the internal sense is the posterity of Jacob--that they extinguished all the truth of doctrine which was of the Ancient Church. Hamor and Shechem, together with the people of their city, represent this truth. For the representative of a church among the posterity of Jacob consisted solely in externals without internals, whereas the representative church among the ancients consisted in externals with internals.