At the beginning of this week’s Torah portion, tazria, we are told this regarding a new baby boy:
וּבַיּוֹם הַשְּׁמִינִי יִמּוֹל בְּשַׂר עָרְלָתוֹ:
On the eighth day, the flesh of his foreskin shall be circumcised. (Leviticus 12:3)
Is there a significance to this number eight, to doing this on the eighth day? It turns out there is. According to the great 16th century rabbi Yehudah Livai of Prag (the Maharal of Prag), everything that pertains to the supernatural intervention of the divine in the world is associated with the number eight.