The Old Testament alludes to--and utterly condemns--the sacrifice of children and other condemnable pagan practices that were widespread among the Canaanite nations, for which God decided to punish them by taking their land away from them and handing it over to the nation of Israel. Below some passages that attest to this fact:
Deuteronomy 18:9-14 (ESV):
9 “When you come into the land that the Lord your God is giving you, you shall not learn to follow the abominable practices of those nations. 10 There shall not be found among you anyone who burns his son or his daughter as an offering, anyone who practices divination or tells fortunes or interprets omens, or a sorcerer 11 or a charmer or a medium or a necromancer or one who inquires of the dead, 12 for whoever does these things is an abomination to the Lord. And because of these abominations the Lord your God is driving them out before you. 13 You shall be blameless before the Lord your God, 14 for these nations, which you are about to dispossess, listen to fortune-tellers and to diviners. But as for you, the Lord your God has not allowed you to do this.
Leviticus 18:19-25 (ESV):
19 “You shall not approach a woman to uncover her nakedness while she is in her menstrual uncleanness. 20 And you shall not lie sexually with your neighbor's wife and so make yourself unclean with her. 21 You shall not give any of your children to offer them to Molech, and so profane the name of your God: I am the Lord. 22 You shall not lie with a male as with a woman; it is an abomination. 23 And you shall not lie with any animal and so make yourself unclean with it, neither shall any woman give herself to an animal to lie with it: it is perversion.
24 “Do not make yourselves unclean by any of these things, for by all these the nations I am driving out before you have become unclean, 25 and the land became unclean, so that I punished its iniquity, and the land vomited out its inhabitants.
Jeremiah 32:33-35 (ESV):
33 They have turned to me their back and not their face. And though I have taught them persistently, they have not listened to receive instruction. 34 They set up their abominations in the house that is called by my name, to defile it. 35 They built the high places of Baal in the Valley of the Son of Hinnom, to offer up their sons and daughters to Molech, though I did not command them, nor did it enter into my mind, that they should do this abomination, to cause Judah to sin.
Sacrificing innocent children is a horrendous and condemnable practice which is obviously wrong however one looks at it. However, I find the practice itself very mysterious and perplexing, as I'm having a hard time trying to wrap my head around the practice. My educated guess would be that Baal, Molech and other pagan deities were not mere imaginary entities, but actual, powerful demonic beings that are ranked very high in the demonic hierarchy of Satan's kingdom, and by sacrificing children as an offering to these deities, some underlying spiritual laws or principles are at play by which the demons are able to receive some benefit and the individuals sacrificing the children receive some benefit as well -- like some sort of macabre "win-win" contract between the demons and the humans performing the ritual. In other words, the sacrifice becomes a "key" in the spiritual realm to "unlock" benefits from demons, and the demons would gain something in return as well, although I have no clue as to what these "benefits" might be and why the sacrifice would be required in the first place. But again, these are just my own speculations, and I'm aware that I may be completely missing the mark on this.
Question: What happens in the spirit realm during a ritual child sacrifice? Are there spiritual laws/principles that are tapped into when a ritual child sacrifice to Molech, Baal or any other pagan deity is performed?
Note: this is a topic that has me very puzzled, and I have no preference for any particular denomination on the matter. Therefore, answers from all denominational viewpoints are welcomed.