The original commandment, as it was known to Jesus, was to do no murder.
That is a fact. Unequivocal. Indisputable.

A young child would not be very aware of the difference between murder and killing, nor would they need to be.
A questioning child would say, "But what about...." and the distinction could easily be clarified.

Never at any time has it been held that taking a life can never be justified as a lesser of evils.

Jim, give any example of killing for profit in modern times, and I will condemn it.
I also condemn indiscriminate arms trading with nasty regimes, but every nation needs to equip its armed forces and that requires trade.