Does the god of the bible allow human sacrifice or the sacrifice of children? [Spirituality & Religion]

God requires us to put him first to receive his blessings, because he is a jealous God. God wants us to love our families but if we have to choose between loving our kids and loving God he wants us to choose God.
God makes deals with us a lot. Like when he says "I challenge you to give me your firstfruits and I will pour down a blessing on you and your barns will overflow."
It is important to note though, that God has told us not to murder in the 10 commandments so we are not to murder. But in war it's ok to kill.

God does not murder but he kills because he is Lord of all and he runs the universe according to his law and justice. He repeatedly tells us that we will be blessed if we love and obey him, but sin results in death.

In OT God is teaching us about himself in these stories and how imperfect and how desperately we fall short as humans. He allowes us to witness His Holiness and greatness by all the sacrifices the Jews had to perform to be in His presence which we wouldn't understand without these stories. These sacrifices to the priests are to gain forgiveness for sins. Sinful people are separated from God! The sacrifices symbolize the ultimate sacrifice of God himself taking our sins on his shoulders because He loves us so much! Abrahams sacrifice of his son is an example of Gods sacrifice of Jesus. The Bible is full of these similarities that have spiritual messages for us. The nations that the Hebrews conquered, won not just because those nations were sacrificing kids but because God didn't help them because they did not love God or His laws. So if we love Him he will answer our prayers which is so amazing. But we have to have faith and we have to repent and want to be obedient. Ofcourse we can't be perfect. Most are not willing! The price is just too high for them!