Deu 4:41 Then Moses separated three cities beyond the Jordan, toward the rising of the sun, 42 for him who killed someone to flee there, he who kills his neighbor unintentionally, without having hated him in time past, and might flee to one of these cities and live... (see also Dt 19)
And this is why to this day, we have varying laws regarding those who die at the hands of another. It is the intent that matters. Those who do so intentionally are not of Elohim, while those who do so unintentionally and repent, to them is possibility of eternal life.
A minor quibble, “murder” is to kill without justification, although I can see how “unintentionally” fits that bill too. Certainly hatred is not justification to kill, but The Bible is full of warfare and intentional killing, which doesn’t rise to “murder.”
Ratzah can be used in context of a non-murder killing. See numbers 35 in the Hebrew for examples. The KJV translation is plausible.
But you are missing the point. I accept that in context of the law as a whole, the subject of the 6th commandment is unjustified, unexcused intentional killing of a human being. We went over all that in crim law. But If you are going to stake your claim on carrying forward the entire Old Covenant legal structure, why not start with something we can agree on? Like murder. Trump is for it, if the dad is a rapist. Do you agree with Trump? Or with the law of God?
Peace,
SR