Where in the torah is the source for obligation to save someones life?
Maybe Vayikra 19:16 ???
I think it is in Devarim 22:2
In Vaikra it says, "Don't stand by and watch someone be killed"
Well, In Devarim it says that you should restore your feelows health or life.
But you need both Pasukim because If the source was "you should restore your friends life I would have thought only me, but if I can't it's ok". Rather the 1st sousre says that you can't stand by and watch, you need to do whatever it takes".