More Medical

God instructed Moses to use hyssop oil as a purifying agent. Hyssop oil has been demonstrated to contain 50% antifungal and antibacterial agents (Numbers:19:18And a clean person shall take hyssop, and dip it in the water, and sprinkle it upon the tent, and upon all the vessels, and upon the persons that were there, and upon him that touched a bone, or one slain, or one dead, or a grave:
See All..., Psalm:51:7Purge me with hyssop, and I shall be clean: wash me, and I shall be whiter than snow.
See All...).

Consider also God's law of circumcision which required it to be performed specifically on the 8th day following birth (Gen:17:12And he that is eight days old shall be circumcised among you, every man child in your generations, he that is born in the house, or bought with money of any stranger, which is not of thy seed.
See All..., Gen:21:14And Abraham rose up early in the morning, and took bread, and a bottle of water, and gave it unto Hagar, putting it on her shoulder, and the child, and sent her away: and she departed, and wandered in the wilderness of Beersheba.
See All..., Lev:12:3And in the eighth day the flesh of his foreskin shall be circumcised.
See All..., Luke:2:21And when eight days were accomplished for the circumcising of the child, his name was called JESUS, which was so named of the angel before he was conceived in the womb.
See All...). Doctors recognize that two main blood clotting factors, Vitamin K and Prothrombim, reach 110% of normal on the 8th day after birth. This aids healing and greatly reduces the possibility of infection. Obstetricians are aware that the 8th day of life is the optimum time for a circumcision, and one done earlier requires an injection of Vitamin K.

For further information: 

1. Leprosy, Medic-Planet Encyclopedia.