“Jewish Law” is the Talmud. I don’t advocate that. Christians didn’t charge interest because the “Old Testament” said not to charge interest. If they hadn’t stopped, we wouldn’t be here. Interest is not necessary to make capital markets work.

Meanwhile, the reason so much of Christianity has fallen so far off the rails, imho, is because we’ve renounced the “Old Testament” largely as “The Ten Commandments (of which we disregard even a few of those) and some nice stories about people remaining faithful to stuff we should ignore”.

I’m capable of going over these things all day, from both practical and scriptural stances, but not if your starting premise is, “you’re wrong”, there isn’t much point.