You really believe that? Yikes. So God purposely added some useless flesh for the benefit of Ancient Hebrews? Please. Oh, and 'pact' and 'covenant'.
Would you rather GOD demanded the killing of everyone's first born son, instead ?
What's the matter ... are you ashamed that you have been circumcised ; or that you haven't been ? Perhaps you don't believe in GOD, or that he chose the Jews to be HIS people. You certainly are having a rather difficult tome with this, for whatever reason. It is NOT even the topic of this thread. Penises just an obsession of your's ? LOL
Circumcision is in the Bible. You might like it or not believe in it but it is definitely there. Oh, and the Bible mentions that Jesus himself was circumcised.