Who is the first man know how to circumcise?

The practice of circumcision dates back thousands of years and its origins are not attributed to a single individual. The earliest known evidence of circumcision comes from ancient Egypt, around 2400 BCE, where it was depicted in carvings and practiced for various cultural and religious reasons. Additionally, circumcision is mentioned in the Hebrew Bible, indicating its significance in ancient Hebrew culture. Thus, it is a tradition with a complex history rather than the achievement of one specific person.