In Judaism, religious law orders that baby boys be circumcised on the 8th day after their birth. This is required even if the 8th day after birth is Shabbat (Saturday). In the Jewish faith, circumcision is an important tradition because it represents the newly born baby being included in the covenant (or agreement) which God made with the prophet Abraham. Medical studys confirm that the 8th day after birth, is the ideal day for a circumcision, because of the highest presence of the Coagulation factor Vitamin K Jews used to bury the foreskin after it was removed.