'The pain after circumcision,' as in Genesis 34:25, signifies lust. While a person is purifying from the love of self and of the world, which is what 'circumcision' represents, as is the case in regeneration, he is in pain and anxiety.

(Referencias: Arcana Coelestia 4496)

4496. 'When they were in pain' means evil desires. This is clear from the meaning of 'the pain' that follows circumcision as evil desire. The reason why such desire is meant by that pain following circumcision is that 'circumcision' means purification from self-love and love of the world, 2039, 2044, 2049, 2632, 3412, 3413, 4462, and every desire of the flesh stems from those loves. This is why 'pain' means such desire. Indeed when a person is being purified from those loves, as happens when he is being regenerated, he suffers pain and distress. It is the desires which are being removed that feel the pain and distress. When some arcanum is represented by means of a religious ceremony every part of the ceremony through to the completion of it embodies some facet of that arcanum. For example, the daggers or knives used in circumcision did so, as did their being made of flint, 2093 (end), 2046 (end), 2799; the blood that flowed at that time did so, and the method employed, and thus the state also. The same is also evident from the procedures followed in cleansings, inaugurations, and consecrations, and all other ceremonies. Here 'the pain' that followed circumcision means the desire on the part of Hamor, Shechem, and the men of his city for the external things in which alone Jacob's descendants had any interest, dealt with above in 4493.