John Gills Exposition of the Bible Commentary - Leviticus 18:25
And the land is defiled ,.... The inhabitants of it, with the immoralities and idolatries before mentioned: therefore I do visit the iniquity thereof upon it ; or punish the inhabitants that are on it for their sins: and the land itself vomiteth out her inhabitants ; as a stomach loaded with corrupt and bad food it has taken in, nauseates it, and cannot bear and retain it, but casts it up, and never receives it again; so the land of Canaan is represented as loathing its inhabitants,... read more
Matthew Henry's Complete Commentary - Leviticus 18:19-30
Here is, I. A law to preserve the honour of the marriage-bed, that it should not be unseasonably used (Lev. 18:19), nor invaded by an adulterer, Lev. 18:20. II. A law against that which was the most unnatural idolatry, causing their children to pass through the fire to Moloch, Lev. 18:21. Moloch (as some think) was the idol in and by which they worshipped the sun, that great fire of the world; and therefore in the worship of it they made their own children either sacrifices to this idol,... read more