“eight days.” The eight days required by Genesis 17:12. The child had to be circumcised on the eighth day, which is precisely the day when the clotting factor prothrombin is the highest in a newborn baby. Until the eighth day Vitamin K levels, which produces prothrombin, are insufficient and any surgery before this could produce hemorrhaging. Out of love, our God ordered that the circumcision rite be done precisely on the eighth day, the only time in a baby’s life when prothrombin levels are above 100%.
“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.” (Dr. S.I. McMillen, None of These Diseases, p. 93.)