Now there's one of those bits of trivia I picked up that may or may not be true.
I have been told that the Hebrews circumcised their sons, because men went into battle in the buff. Hebrews were circumcised so that they could distinguish themselves from their adversaries, who were also nude.
I don't know if that's true. I don't think I'd have the mental wherewithal to check out willies in the heat of battle. But I heard it somewhere.

I worked for a little paper, published by a British company. The publisher, who was British, liked us to write up christenings. Which is practical in a nation where most people belong to the same church, and NOT practical in a nation where there's a Catholic Church a Swedenborgen Church and a Methodist church within walking distance of a Conservative synagogue. I asked the editor (American, but not brainy.) if she wanted me to write up brises too. After a long pause, she said "I guess they had baptisms back in Bible times too." A bris, for those of you who didn't grow up in a Jewish neighborhood, is the Jewish circumcision ritual.