Charles Ellicott Commentary Leviticus 20:4

"And if the people at the land do at all hide their eyes from that man, when he giveth of his seed unto Molech, and put him not to death;" — Leviticus 20:4 (ASV)

And if the people of the land ... — In the previous verse, the Legislator dealt with cases where there was insufficient evidence. Here he declares what God would do if the community itself, whose duty it is to carry out the sentence, either from culpable indifference or criminal sympathy with the sin, were to connive at it.