https://en.wikipedia.org/wiki/Moloch

If you feel like searching the bible itself it is spelled "molech"

The molech references happen directly after the folks make the golden idol, and moses and Aaron sacrifice some goats to appease god, aaron looses his two sons because they played with the tabernacle, and god tells them to eat the meat sacrifice, after which they both start seeing god much clearer (probably tripping), and they are downloaded like a billion rules, and even tough sacrificing to molech isn't mentioned before that moment, god makes it a point to create rules about not sacrificing seed to molech, or to sacrifice offerings in the wilderness. Basically god said if you're gonna sacrifice it has to be sacrificed to the church.

This is after they had had already built the idol the first time and basically gods answer was "yo y'all got So much gold etc you should make a tabernacle out of the idol"