Moses is here directed to say that again to the children of Israel which he had in effect said before, Lev. 20:2. We are sure it was no vain repetition, but very necessary, that they might give the more earnest heed to the things that were spoken , and might believe them to be of great consequence, being so often inculcated. God speaketh once, yea, twice , and what he orders to be said again we mu...