1st Samuel 

"Wherefore David arose and went, he and his men, and slew of the Philistines two hundred men; and David brought their foreskins, and they gave them in full tale to the king, that he might be the king's son in law. And Saul gave him Michal his daughter to wife," (1 Samuel 18:27 KJV). 

To obtain Michal, David was told by King Saul to obtain 100 foreskins, but why? One scholar named Dr. David A. Falk asserts it is proof of fatality. Men only have one foreskin, that is, unless they are circumcised. Most armies would keep count of their victims using parts of the body. Egyptians specifically are known to take the right hands. Gengis Khan was known to take the ears. This was merely the choice by Saul. 

Works Cited

Dr. Falk, David. Live Stream #126: Live Stream #126: Apocalypse Of The Sock

YouTube, YouTube, 30 Sep. 2023, https://www.youtube.com/watch?v=Ou2jBECn4rM&t=4148s. (0:08:42) Accessed 30 Sep. 2023.