And they built the high places of Baal, which are in the valley of the son of Hinnom, to cause their sons and their daughters to pass through the fire unto Molech; which I commanded them not, neither came it into my mind, that they should do this abomination, to cause Judah to sin.
Jeremiah 32:35
Deuteronomy 12:31 Thou shalt not do so unto the LORD thy God: for every abomination to the LORD, which he hateth, have they done unto their gods; for even their sons and their daughters they have burnt in the fire to their gods.
2 Kings 17:17 And they caused their sons and their daughters to pass through the fire, and used divination and enchantments, and sold themselves to do evil in the sight of the LORD, to provoke him to anger.
Jeremiah 7:31 And they have built the high places of Tophet, which is in the valley of the son of Hinnom, to burn their sons and their daughters in the fire; which I commanded them not, neither came it into my heart.
Jeremiah 19:5 They have built also the high places of Baal, to burn their sons with fire for burnt offerings unto Baal, which I commanded not, nor spake it, neither came it into my mind:
2 Chronicles 28:2-3 For he walked in the ways of the kings of Israel, and made also molten images for Baalim. 3Moreover he burnt incense in the valley of the son of Hinnom, and burnt his children in the fire, after the abominations of the heathen whom the LORD had cast out before the children of Israel.
The Lord is against it.
Leviticus 18:21 And thou shalt not let any of thy seed pass through the fire to Molech, neither shalt thou profane the name of thy God: I am the LORD.
Leviticus 20:2 Again, thou shalt say to the children of Israel, Whosoever he be of the children of Israel, or of the strangers that sojourn in Israqvjael, that giveth any of his seed unto Molech; he shall surely be put to death: the people of the land shall stone him with stones.
Deuteronomy 12:31 Thou shalt not do so unto the LORD thy God: for every abomination to the LORD, which he hateth, have they done unto their gods; for even their sons and their daughters they have burnt in the fire to their gods.
It was common for the heathen to sacrifice their children which why it was not a strange thing when God tested Abraham by telling him to sacrifice Isaac. He want to see if Abraham was as devoted to Him as the heathen were to their false gods.
One of the things God saved us from was burning our children alive in sacrifice to idols. That is what making your children pass through the fire means.
It is the religion of works that the God of the Bible has saved us from. The God of the Bible forbids the practice of self-mutilation and physical abuse as penance or a show of earnestness in one’s devotion. It also forbids many other practices like widows being burnt alive along with their husband’s corpse, sacrificing children, crawling on your hands and knees over rough stone, and many other religious/cultural customs that permeate the religion of works. Most importantly, the religion of the Bible relieves us from the impossible requirement to obtain and maintain self-righteousness and gives us God’s righteousness.