But the word of the Lord was unto them - Or, rather, but the word of Yahweh “shall be” unto them. This refers to the mode in which God said He would instruct them in a foreign land. They had complained Isaiah 28:9-10 that his instructions had been like a short lesson constantly repeated, as we instruct children. God here says that it should be as they said it was - they would be carried away to a distant land, and long abide among strangers; they would have ample time there to acquire instruction, and all that they would receive would be lesson after lesson of the same kind - line upon line, one judgment following another, until the lesson of their disobedience had been fully inculcated, and they had been brought to true repentance.
Here a little, and there a little - So they had said Isaiah 28:10 the lessons of God were to them by the prophets. So God says his lessons “shall be” to them by judgment. It shall not come in one sudden and overpowering burst of indignation, but it shall be, as it were, dealt out to them in small portions that it may not be soon exhausted.
That they might go ... - That they may go into captivity, and stumble, and be broken by the judgments of God. God will so deal out the lessons of his judgment and wrath, that as a people they shall be broken up, and made prisoners, and be borne to a distant land.