New Defender's Study Bible Notes
33:6 the son of Hinnom. This valley had been so identified since at least the time of Joshua (Joshua 15:8), and it is probable that the original “son of Hinnom” was a Jebusite who offered his valley for the pagan sacrificial rituals of the Canaanites. See note on II Chronicles 28:3.
33:6 wrought much evil. Manasseh departed so far from the godly practices of his father, entering so deeply into every form of Satanic doctrine and practice and leading his people to participate in them (even “worse than the heathen”—II Chronicles 33:9), that the only divine remedy was eventual judgment and exile (II Kings 21:12-16).