halbhh
The wonder and awe of "all things".
We can then ask reasonably:Suppose you hear in one of the towns the LORD your God is giving you that some worthless rabble among you have led their fellow citizens astray by encouraging them to worship foreign gods. In such cases, you must examine the facts carefully. If you find it is true and can prove that such a detestable act has occurred among you, you must attack that town and completely destroy all its inhabitants, as well as all the livestock. Then you must pile all the plunder in the middle of the street and burn it. Put the entire town to the torch as a burnt offering to the LORD your God. That town must remain a ruin forever; it may never be rebuilt. Keep none of the plunder that has been set apart for destruction. Then the LORD will turn from his fierce anger and be merciful to you. He will have compassion on you and make you a great nation, just as he solemnly promised your ancestors. “The LORD your God will be merciful only if you obey him and keep all the commands I am giving you today, doing what is pleasing to him.” Deuteronomy 13:13-19
Same argument?
Was eradiating child sacrifice in fire to idols one of the most important of all priorities evidently in the text of the old testament?
Answer: Yes. Worshipping idols -- sacrificing children in fires to the common idols of the region -- is several times warned against in the most extreme way, as you just showed.
Like a gardener pulling out a certain very harmful weed, roots and all, leaving no trace, so God would have Israel remove it in a total way, so that nothing remained of it.
And all would go to the place where the innocent and forgiven are separated from the unrepentant guilty. The innocents/forgiven to eternal life, the unrepentant to eternal death.
But nevertheless it seems from 1rst Peter chapter 3 wording they would all have a chance to hear the gospel after this mortal life, having a chance to turn and be redeemed.