It's going to a woman so if it's emotionally charged I think it could work better. Tried what I thought were the basic ones but it all falls back to "daddy is and wants him to look like him" and "I knew a guy who wasn't and he was embarrassed in high school. Very dumb reasons, I know.
https://www.bitchute.com/video/6p2XLAzLv26V/
The dude is legit pissed about his stolen foreskin and made arguments they couldn't rebut, so they shut it down.
Unfortunately, barring a miracle from God leading to their actual conversion to Christianity, or the destruction of the golden calf of israel by divine intervention, you wont be able to reason with them. Pre-Millennial Dispensationalism *is* the Judaization that St. Paul warned us of, albeit actual Jews still existed when St. Paul wrote it, whereas the Talmudists and their offshoots are 100% a Synagogue of Satan
\>"If you are circumcised then Christ will be of no use to you"
What did Paul mean by this? Not even Sola Scriptura people could deny that one...
edit: [its still on jewtube](https://www.youtube.com/watch?v=FCuy163srRc)