Genesis 17:10

This [is] my covenant, which ye shall keep, between me and you and thy seed after thee; Every man child among you shall be circumcised.

Ver. 10. Every man-child among you.] Infants were circumcised to signify that we had better be flayed, and have our skin quite stripped off, than to have it as a skin-bottle hanging in the smoke of filthy desires, and blown full of unclean motions with the breath of Satan. That wretched renegade that betrayed Rhodes was well served. For his promised wife and portion were presented: but the Turk told him that he would not have a Christian to be his son-in-law, but he must be a Mussulman, that is, a believing Turk, within and without. And therefore he caused his baptized skin, as he called it, to be flayed off, and him to be cast in a bed, strewed with salt, that he might get a new skin, and so he should be his son-in-law. But the wicked wretch ended his life with shame and torment. a

a Spec. Bel. Sac., p. 157.