| − | In Genesis 17:12, God mandated that Abraham circumcise his sons on the 8th day after birth. In 1935, it was discovered that Vitamin K, together with prothrombin, causes blood coagulation, (important in any surgical procedure). On the 8th day, the amount of prothrombin present is elevated above 100% of normal and is therefore the only day in the male's life in which this will be the case (normally). If surgery is to be performed, day 8 is the perfect day to do it as vitamin K and prothrombin levels are at their peak. | + | In Genesis 17:12, God mandated that Abraham circumcise his sons on the 8th day after birth. In 1935, it was discovered that Vitamin K, together with prothrombin, causes blood coagulation, (important in any surgical procedure). On the 8th day, the amount of prothrombin present is elevated above 100% of normal and is therefore the only day in the male's life in which this will be the case (normally). If surgery is to be performed, day 8 is the perfect day to do it as vitamin K and prothrombin levels are at their peak.<ref>https://www.researchgate.net/publication/321462229_Haematological_Basis_of_8th_Day_Male_Child_Circumcision_in_The_Holy_Bible</ref> |