I would respectfully disagree with you @Cold Steel.
I HAVE taken courses in OT theology and it doesn't change the fact that God did not always warn people before destroying or king them - remember Uzzah for example? 2 Sam 6:7. And how exactly were the tribes that the Israelites conquered warned by God? He did not speak to them did he, he only prophesied to or warned the Israelites.
You say you have no problem with God destroying people who practised forced prostitution, but it was God himself that condoned such practices. How do you account for the Israelites being instructed by him to take the virgins for themselves as spoils of war? For what purpose other than rape would this be for. Legitimised by forced marriage. Do you really think that a young girl would willingly marry and have sex with a soldier that just slaughtered her whole family in front of her eyes?