Mohel have the training, they designate a "mohel". The mohel is specially trained in circumcision and the rituals surrounding the procedure. Many "mohalim" are doctors or rabbis (and some are both) or cantors and are required to receive appropriate training both from the religious and medical fields. Traditionally, the "mohel" uses a knife to circumcise the newborn. Today, doctors and some non-Orthodox "mohalim" use a perforating clamp before they cut the skin. The clamp makes it easier to be precise and shortens recovery time. Orthodox "mohalim" have rejected perforating clamps, arguing that by crushing and killing the skin it causes a
Who is a Jew? meaning "forced ones"), and their matrilineal descendants are likewise considered to be Jewish. Judaism has a category for those who are Jewish but who do not practice or who do not accept the tenets of Judaism, whether or not they have converted to another religion. The traditional view regarding these individuals, known as Meshumadim (), is that they are Jewish; however, there is much debate in the rabbinic literature regarding their status vis-a-vis the application of Jewish law and their participation in Jewish ritual, but not to their status as Jews. A Jew who leaves Judaism is free to return