8th Day Circumcision

Posted by on Jul 31, 2012 in Johnsons from the Front | 2 comments

In Genesis 17:12,  God commanded Abraham to circumcise newborns males on the eighth day. “And he that is eight days old shall be circumcised among you,… “ Genesis 17:12.


Why the 8th day? In Judaism, circumcision is considered a symbol of the covenant between God and the Jewish people. The act of circumcision is called the bris, which literally means “covenant.” One reason the circumcision is performed on the eighth day is so that if the newborn baby will have lived through a complete week which includes a Sabbath. Once the baby has experienced the “holiness” of a Sabbath, he may enter into the covenant of the Jewish people.

Another reason for the 8th day deals with blood clotting. Blood clotting is dependent on 3 factors: platelets, prothrombin, and vitamin K (which is responsible for prothrombin production and is produced by bacteria in the intestinal tract). Holt and McIntosh, in their classic work, Holt Pediatrics, observed that a newborn infant has “peculiar susceptibility to bleeding between the second and fifth days of life. … Hemorrhages at this time, though often inconsequential, are sometimes extensive; they may produce serious damage to internal organs, especially to the brain, and cause death from shock and exsanguination” (1953, pp. 125-126).

It has been shown that it is on the fifth through the seventh days of the newborn male’s life that vitamin K is present in adequate quantities for blood clotting.

On the eighth day, the amount of prothrombin present is above one-hundred percent of normal (the only day in the male’s life in which this will be normally be the case). Therefore, the 8th day is the perfect day to do the circumcision … when the Vitamin K and prothrombin levels are at their peak.

And once again the Bible reveals a great deal of scientific truth written hundreds, and sometimes thousands of years before being “discovered” by modern scientists.


Lanny Johnson

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  1. What about females? Do they also follow this pattern of producing much more on day 8?

    • Dear Sandi
      I have no direct evidence that on the 8th day the female (mother) blood clotting is optimized. However, attached are several thoughts that might help.

      Thanks for your inquiry.

      Thanks and God Bless
      Lanny Johnson
      Alpha Omega Institute (discovercreation.org)
      … lift up thy voice with strength; lift it up, be not afraid; say unto the cities of Judah, Behold your God! Isaiah 40:9

      Blood clotting is dependent on 3 factors: platelets, prothrombin, and vitamin K (which is responsible for prothrombin production).

      On day 8 everything is in place for blood clotting.

      Today, most male babies are circumcised before the 8th day, and given and injection of vitamin K to help blood clotting. Many times the mother, if bleeding excessively from the birth, will also be given an injection of vitamin K to boost her clotting … as per several doctors and nurses.

      Childbirth and circumcision
      In the eighth day the flesh of a male child’s foreskin was to be circumcised (Lev. 12:2). This surgical procedure was hygienically as well as spiritually important (Col. 2:11-12). Medical science recognizes that there is a much higher rate of disease, especially cancer, among women with uncircumcised husbands.(1) The foreskin harbors many virulent bacteria, including the cancer-producing Smegma bacillus. Medical research has also discovered that the safest day to perform circumcision is the eighth. The blood’s ability to clot is poor between the second and fifth day. Also during this period, the child’s immune system is strengthened with antibodies received through his mother’s milk.

      After childbirth, a specific number of days were to be allowed for a woman’s “uncleanness” (called the “days of her separation” and the “blood of her purifying,” Lev. 12:2-3). Medical science now recognizes the fact that a woman needs time to allow for complete recovery after childbirth. By following this instruction, postpartum complications such as puerperal sepsis and hemorrhage are lessened.

      1) Study note Luke 2:21 New Defender’s Study Bible; © 1995, 2006 by World Publishing, Inc., Nashville, TN 37214

      Dr. Henry M. Morris
      The right of circumcision, as a sign of the Abrahamic Covenant (Ge. 17:9-14), is known also to be of significant health benefit to the male. Its performance on the “eighth day” is also now known to be the optimum time for it to be done, in terms of the most rapid recovery of the child from the operation. The coagulates in the blood of an infant normally reach their optimum effectiveness eight days after birth.


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