But then again...there are instances in OT where God does...sort of...maybe a little...kinda...encourage wiping out entire tribes or groups of people (enemies of Israel).
I will let others speak to God on instituting that today. I bow out of those considerations.
Those passages make a lot more sense under the theory that those nations contained the offspring of the Nephilim; the gigantic children of Angels who were at war with God and mankind.
The 10 tribes thing always seems arbitrary. Always someone pointing to this or that group as being them; all different races too, always with themselves being the children of the promise, and always with complete certainty. It seems to me a pointless exercise fraught more with danger than promise. Who my long ago ancestors were is far less important to me than knowing I am Christ's, than making sure my children have a future.
I happened across a video just today from some blacks claiming that the Hebrews had to be black and that white people were actually from the Angels breeding with men in Gen 6. Seems like just a silly thing until you realize it feeds back into the wiping out the Nephalim thing and the view of some in the black community advancing the idea that whiteness is a faulty genetic mutation that should be wiped out.