I have several books by Rabbi Joseph Telushkin and Dennis Prager, both thoughtful Jews who provide clear reasoning.
I also did a quick internet search for some jewish references and found quite a few by searching âjudaism thou shalt not kill murderâ.
Also, a quick, common sense approach is to recognize that God does not contradict Himself. In the words of Rabbi Telushkin, " the only biblical law repeated in each of the Torahâs five books is that ordaining capital punishment for premeditated murderers (see for example Genesis 9:6, âwhoever sheds the blood of man, by man shall his blood be shedâ). So, how can God give us a commandment not to kill and then require us to kill? He didnât and wouldnât. He commanded us not to murder. Also, the Catholic Church acknowledges this indirectly in the catechism when allowing that at times, under certain conditions it is ok. Now obviously, if the commandment was merely âshall not killâ, the CC would be teaching something contrary to the bible.
Otherwise, it would be a sin to kill a man in order to protect ones children. Thank God, it is not. If necessary, and absolutely necessary, we can kill to protect the innocent from a murderer.
Thou shalt not murder.