Charles Ellicott Commentary Leviticus 18:1

"And Jehovah spake unto Moses, saying," — Leviticus 18:1 (ASV)

And the Lord spake unto Moses. —Unlike the preceding Divine communications, which dealt with ritual and ceremonial pollutions, the enactments which Moses is here commanded to communicate directly to the children of Israel, or their representatives, the elders, affect their moral life—precepts which form the basis of domestic purity and are the foundation of human happiness.