Amatul Rahmân Omer:
Because of this (incident) We laid down for the Children of Israel that he who kills a human being - unless it be for (murdering) a person or for (reforming) disorder in the country, it is as if he has killed entire human race. And whoso saves a (human) life it is as if he has saved the entire mankind. Certainly, Our Messengers had already come to them with clear arguments, yet (even after that) many of them were certainly those who committed excesses in the land.
Surah Al Maidah (The Table Spread with Food) Ayat 32