Well, as a decent human being, yes, that's what you're supposed to do. The question wasn't that, though
BP actually mostly got it. Technically speaking, all three of them have "kill the sinner" (often rather horrifically) as part of their scripture when it comes to sinners, to varying extents. Christianity has
arguably the most scriptural wiggle-room when it comes to that, iirc, but the message is still there and there has been historic incidences of cultural groups claiming to follow the religion doing some pretty disgusting shit towards perceived sinners.
Of course, most of them have strictly contradictory messages to that directive, too, but hey, what's an abrahamic religious text without contradiction?
The actual measure has indeed been highly cultural. It's actually fairly rare, from what I understand, that any particularly religiously influenced country will execute or torture those that sin in the eyes of the religion in question, or go out to kill non-believers, etc., etc. With the exception of the obvious immoral sins (murder and theft, mostly.), they're
generally just kinda' ignored.
As to the
supposed aspect, I'll actually bow out on that one. So far as I'm aware, all three of them, roughly speaking, want to talk people in to avoiding sin, but how it's gone about varies heavily enough based on culture, time, denomination, etc. that I wouldn't be terribly comfortable making much of a summation. Mostly because, s'far as I know, there isn't an actual summation to be
made, since doctrinal or traditional guidelines for interacting with the sinful vary just that much.