And if the {c} people of the land do any ways hide their eyes from the man, when he giveth of his seed unto Molech, and kill him not:

(c) Though the people be negligent to do their duty, and defend God's right, yet he will not allow wickedness to go unpunished.

Wesley's Notes

20:4 Hide their eyes - Wink at his fault, and forbear to accuse and punish him.

Jamieson-Fausset-Brown Bible Commentary

4. If the people of the land do any ways hide their eyes from the man, &c.-that is, connive at their countrymen practising the horrid rites of Molech. Awful was it that any Hebrew parents could so violate their national covenant, and no wonder that God denounced the severest penalties against them and their families.

Matthew Henry's Concise Commentary

20:1-9 Are we shocked at the unnatural cruelty of the ancient idolaters in sacrificing their children? We may justly be so. But are there not very many parents, who, by bad teaching and wicked examples, and by the mysteries of iniquity which they show their children, devote them to the service of Satan, and forward their everlasting ruin, in a manner even more to be lamented? What an account must such parents render to God, and what a meeting will they have with their children at the day of judgment! On the other hand, let children remember that he who cursed father or mother was surely put to death. This law Christ confirmed. Laws which were made before are repeated, and penalties annexed to them. If men will not avoid evil practices, because the law has made these practices sin, and it is right that we go on that principle, surely they should avoid them when the law has made them death, from a principle of self-preservation. In the midst of these laws comes in a general charge, Sanctify yourselves, and be ye holy. It is the Lord that sanctifies, and his work will be done, though it be difficult. Yet his grace is so far from doing away our endeavours, that it strongly encourages them. Work out your salvation, for it is God that worketh in you.