There's even more to it. Here's an interesting blurb about WHEN circumcision should be performed, and why. I think you will also notice that in everything God recommends we do, He has more than just one reason for doing so. Suddenly now, we discover, "Well whatdoyaknow-- He was right, this time..."
In Genesis 17:12, God specifically directed Abraham to circumcise newborn males on the
eighth day. Why the
eighth day? In 1935, professor H. Dam proposed the name vitamin K for the factor in foods that helped prevent hemorrhaging in baby chicks. We now know vitamin K is responsible for the production (by the liver) of the element known as prothrombin. If vitamin K is deficient, there will be a prothrombin deficiency and hemorrhaging may occur. Oddly, it is only on the fifth through the seventh days of the newborn males life that vitamin K (produced by bacteria in the intestinal tract) is present in adequate quantities. Vitamin K, coupled with prothrombin, causes blood coagulation, which is important in any surgical procedure. 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). Obviously, then, if vitamin K is not produced in sufficient quantities until days five through seven, it would be wise to postpone any surgery until some time after that. But why did God specify day
eight?
On the eighth day, the amount of prothrombin present actually is elevated
above one-hundred percent of normaland is the only day in the males life in which this will be the case under normal conditions. If surgery is to be performed, day eight is the perfect day to do it. Vitamin K and prothrombin levels are at their peak. The chart below, patterned after one published by S.I. McMillen, M.D., in his book,
None of These Diseases, portrays this in graphic form.
Dr. McMillen observed:
We should commend the many hundreds of workers who labored at great expense over a number of years to discover that the safest day to perform circumcision is the eighth. Yet, as we congratulate medical science for this recent finding, we can almost hear the leaves of the Bible rustling. They would like to remind us that four thousand years ago, when God initiated circumcision with Abraham....
Abraham did not pick the eighth day after many centuries of trial-and-error experiments. Neither he nor any of his company from the ancient city of Ur in the Chaldees ever had been circumcised. It was a day picked by the Creator of vitamin K (1984, p. 93).