As for “kill” and “murder,” thank you. This is handy as it correlates very nicely with Islamic distinctions. You can kill (outsiders), you just can’t murder other muslims. Jews could kill Canaanites and any other enemy, but not murder each other. Yes indeed, the more we talk, the more OT Islam looks.
It's always interesting to ask a believer if they are still under dictum to kill an Amalekite on sight.
Hitchens asked Douglas Wilson this question, and Wilson said that he indeed would kill an Amalekite if he encountered one. Nice morality.