Therefore thus says Yahweh: 'Your wife shall be a prostitute in the city, and your sons and your daughters shall fall by the sword, and your land shall be divided by line; and you yourself shall die in a land that is unclean, and Israel shall surely be led away captive out of his land.'"
That is, the locusts had made an end of eating the grass of the land, as he saw in the vision the locusts coming in and destroying the green crops completely.