Nothing. You made a statement of "fact" that humans were programmed not to kill one another. I stated from Scripture this wasn't true.
Trying to refute Scripture by using "some rabbis" hold beliefs in something and then backing away from it when called out is about as effective as saying a genie came out of a lamp and said blah blah blah. I can't prove a negative. I can't prove it didn't happen........but I can show you where it would be inaccurate by Scripture and therefore worthless to your argument.
You built a strawman based on "some rabbis." I showed again where it was Scripturally wrong. "Some rabbis" and strawmen will not help you win this debate.
I never “tried” “to refute Scripture.”
I was just quoting rabbis saying Cain was the son of satan. I never argued it was true. It was not the point nor the context; the context was the reality of evil in this world.