54. We can see from the following passages that circumcision represented purification from evils that are caused by strictly earthly love:

Circumcise your heart and take away the foreskin of your heart, so that my wrath will not break forth because of the ill will of your deeds. (Jeremiah 4:4)

Circumcise the foreskin of your heart and no longer stiffen your neck. (Deuteronomy 10:16)

To circumcise the heart or the foreskin of the heart is to purify ourselves from evils.

Conversely, then, being uncircumcised or having a foreskin refers to people who have not been purified from evils caused by strictly earthly love and who are therefore not devoted to caring, and since having a foreskin means being unclean at heart, it says that no one who is uncircumcised at heart or uncircumcised in the flesh is to enter the sanctuary (Ezekiel 44:9); that no uncircumcised person is to eat the Passover meal (Exodus 12:48); and that the uncircumcised are damned (Ezekiel 28:10; 31:18; 32:19).

909. 'Birds' means things of his understanding and 'beasts' those of his will, [both of] which belong to the internal man; and 'every creeping thing that creeps over the earth' means corresponding things of a like nature residing with his external man. This becomes clear from the meaning of 'a bird', dealt with already in 40, 776, and of 'a beast' in 45, 46, 142, 143, 246. That 'creeping thing that creeps over the earth' means corresponding things residing with the external man is clear from this. Indeed 'creeping thing that creeps' here stands in relation both to 'birds', or things of the understanding, and to 'beasts', or those of the will. The most ancient people used to call the sensory powers and the appetites of the body 'creeping things that creep' because they are indeed just like reptiles that creep along the ground. They also likened the human body to the earth or to the ground. Indeed they actually called it the earth or the ground, as in the present verse where nothing other than the external man is meant by 'the earth'.