While awaiting and looking forward to more learned answers, let me contribute my bit here
The beauty of the scriptures is to be able to see what a sharp edge the Word is …each sitaution being dealt with as it needed …not one blanket , impersonal (wicked ) rule that all ’ infidels ’ are to be dealt with in such and such a way …through forced conversions ( something never seen in The Word - God’s true nature of respect for the human will and dignity is what gets revealed )
Our modern day plague of mad cow disease might offer some insight into how sin had to be dealt with in O.T days - a virulent contagion that had to be dealt with effectivly , for self preservation- all those millions of cows that had to be burned and buried - for the infecting virus , like an agent from hell , that even heat could not destroy !)
In the O.T times too, the Israelites, the group whom God had chosen , to use against the massive contagion of demonic powers in other cultures - child sacrifice, immorality ,theft and wars ; yet , the Israelites ,through their own rebellion, became contaminated many times , that instead of serving as an antidote for the plague around them , they themselves become the carriers !
Sin , with its wickedness and hardness of hearts and all types of evil ways … that it could even have been, in many a case , that their destruction was an act of mercy where Israel also had to pay a terrible price - of having to be in war !
That is - until the powerful and effective weapon /medicine / vaccine , appeared - in The Incarnate Word - our Lord having brought the power of The Spirit , the awarenss that we, each of us …man , woman , young , old …we truly belong to our Lord …
that , through a life of holiness, focus on The Kingdom, we are to overcome the worldly ways … and even martyrdom when needed , so that even the unbelievers would see - there is SomeOne worth dying for ( not killing for) , for God is Our Father , Father of all , who want enemies to be loved ; telling His children to bless those who curse , to pray for those who persecute …
Yet, that element of rebellion is still here among the Chosen ones as well …falling away from faith , turning to man made idols of money, pleasure and worse …and we see the continuing judgements , in the forms of wars, atheism , communsim ( ? Islam ) and so on …
But we are not to be afraid …as our Lord tell us ’ I have overcome the world ’ …so shall we, with His help … He IS with us

… to share our sorrows …to hold us in our fears …Mother Mary and all the many great and small saints , angels praying …
And today , Sunday, we get to participate in The Worship …with all of heaven …
to bring down graces , to cast out enemy strong holds of hatred and fears …to bring peace and joy to countless hearts !
Our God is an awesome God …and it is an awesome thing, to be in Our Lord’s priesthood !
