Spiritual betrayal reaches a horrifying peak when idolatry transforms from mere worship into the cruel act of child sacrifice. The people took their own sons and daughters and offered them to false gods, treating them as food to be consumed by these idols. This refers specifically to the worship of Molech, a gruesome ritual where children were passed through fire and burned [רד״ק, מצודת דוד, ביאור שטיינזלץ]. Some trace this devastating practice to the era of King Ahaz, who publicly embraced idolatry and burned his own sons in the fires of Molech [מלבי״ם].
A profound question arises regarding to whom these sacrificed children truly belonged. The primary approach among commentators is that these children belonged to God. They were brought into His covenant and destined to learn His teachings, yet the people stole them away to serve idols. A narrower view suggests this refers specifically to firstborn children, who are legally sanctified and belong exclusively to God [רש״י]. Conversely, another perspective argues that these children did not belong to God at all, as they were born directly from acts of spiritual betrayal and idolatry. The people merely associated them with God because they were raised within His domain [מלבי״ם].
A midrashic interpretation highlights the extreme, ironic cruelty of these acts. It describes a scenario where a man with five sons would dedicate four to idol worship and reserve only one for the study of God's teachings. Yet, when the time came to offer a sacrifice to Molech, the father would specifically choose to murder the one son who had been set aside for God [רש״י, רד״ק].
The narrative concludes with a piercing question, asking if the initial betrayal was somehow insufficient. This serves as a harsh rebuke, questioning whether the sins of spiritual infidelity and chasing after idols were not terrible enough, that the people felt compelled to add the unthinkable crime of murdering their own children [מצודת דוד, רד״ק, ביאור שטיינזלץ]. Another approach views this question as pointing to a dark escalation within the sin itself. It asks whether the children born of illicit, idolatrous unions were too few to satisfy the false gods, prompting the people to begin slaughtering the true children of God as well [מלבי״ם].