Apocalypse Explained # 1039
1039. Full of names of blasphemy, signifies which are adulterated and falsified. This is evident from the signification of "name," as being what a thing is or what a state is (See n. 102, 148, 676, 695, 841); therefore "full of names" signifies what the holy things of the Word were to it; also from the signification of "blasphemy," in reference to the Word, as being its adulteration and falsification (See n. 778).
Harvest
The 'Harvest,' as mentioned in Mark 4:29, signifies the increase of the church in general and particular.
In Joel 3:13, it signifies the last state of the church before it has been devastated from all good and truth.
'A harvest' symbolizes the state of the church with respect to Divine truth. The reason is that a harvest yields the grain used to make bread, and grain and bread symbolize the church's goodness, which is achieved through truths.
(Odkazy: Apocalypse Revealed 645; Joel 3; Mark 4)