This is the message that the LORD spoke earlier concerning Moab.
13. This is the word. This concluding sentence is the ratification of the prophecy. It means that he has pronounced the decree of God himself, and that he has brought nothing forward that did not proceed from the Lord, and thus, laying aside the person of a man, he introduces God speaking in this manner.
Here we have, I. The sins with which Moab is charged, Isa 16:6. The prophet seems to check himself for going about to give good counsel to the Moabites, concluding they would not take the advice he gave them. He told them their duty (whether they would hear or whether they would forbear), but despairs of working any good upon them; he would have healed...
Commenting on Isaiah 16:6-14
This is the word that the Lord hath spoken concerning Moab,.... That is, this prophecy now delivered out is what comes from the Lord; it is the word of the Lord, and not of man, and so shall certainly come to pass; when this word was spoken follows: since that time; from eternity, as some, and so refer it to the decree of God within...