A (מוֹהֵל moˈhel, Ashkenazi pronunciation ˈmɔɪ.əl, plural: מוֹהֲלִים mo.haˈlim, מוֹהֲלָא , "circumciser") is a Jew trained in the practice of , the "covenant of circumcision". The noun ( in Aramaic), meaning "circumciser", is derived from the same verb stem as (circumcision). The noun appeared for the first time in the 4th century as the title of a circumciser (Shabbat (Talmud) 156a). Religious male circumcision#In the Tanakh For Jews, male circumcision is mandatory as it is prescribed in the Torah. In the Book of Genesis, it is described as a mark of the covenant of the pieces between Yahweh and the descendants of Abraham: And God said unto Abraham: 'And as for thee, thou shalt keep My covenant, thou, and thy seed after thee throughout their generations. This is My covenant, which ye shall keep, between Me and you and thy seed after thee: every male among you shall be circumcised. And ye shall be circumcised in the flesh of your foreskin; and it shall be a token of a covenant betwixt Me and you. And he that is eight days old shall be circumcised among you, every male throughout your generations, he that is born in the house, or bought with money of any foreigner, that is not of thy seed. He that is born in thy house, and he that is bought with thy money, must needs be circumcised; and My covenant shall be in your flesh for an everlasting covenant. And the uncircumcised male who is not circumcised in the flesh of his foreskin, that soul shall be cut off from his people; he hath broken My covenant.' In Leviticus: And the LORD spoke unto Moses, saying: Speak unto the children of Israel, saying: If a woman be delivered, and bear a man-child, then she shall be unclean seven days; as in the days of the impurity of her sickness shall she be unclean. And in the eighth day the flesh of his foreskin shall be circumcised. And she shall continue in the blood of purification three and thirty days; she shall touch no hallowed thing, nor come into the sanctuary, until the days of her purification be fulfilled.