These verses contain a warning against the sins of incest and impurity already specified. The reason why the Canaanites were east out before the Israelites was that they were defiled in all these things,… and the land was defiled by them. God visited the iniquity of these debased races, and the land itself vomited out her inhabitants on account of their abominations. The fate of the Canaanites was therefore a witness to them of what would be their fate if they did like them. Defile not ye yourselves in any of these things … . Ye shall not commit any of these abominations,… that the land spue not you out also, when ye defile it. Special penalties are appointed for particular sins further on. Here there are but two punishments denounced, one for individual sinners, the other national. The individual sinner is to be cut off from the nation by excommunication, For whosoever shall commit any of these abominations, even the souls that commit them shall be cut off from among their people. The nation, if it does not thus purify itself by cutting off from itself the authors of these corruptions, is to perish like the Canaanites. The words vomiteth (Leviticus 18:25) and spued out (Leviticus 18:28) are in that tense of the Hebrew verb which is generally called by grammarians a preterite, but this tense does not necessarily imply a past time; the time referred to depends on the context. The previous verbs, "I cast out," "I do visit," being present in sense, the two verbs, "vomiteth out (her inhabitants)," and "spued out (the nations that were before you)," are present also (see Introduction).
HOMILETICS