'A harlot' signifies the affection of falsities and thus the church corrupted.

(Посилання: Arcana Coelestia 4522)

4522. 'Is he going to treat our sister like a prostitute?' means on account of the fact that they had no affection [for truth]. This becomes clear from the representation of 'Dinah' after she had been defiled or treated like a prostitute, as the affection for falsities, and so a corrupted Church, dealt with in 4504, one therefore which no longer had any affection for truth, as may also be seen in that paragraph.