They have sown wheat, but shall reap thorns: they have put themselves to pain, but shall not profit: and they shall be ashamed of your revenues because of the fierce anger of the LORD.
They have sown wheat, but shall reap thorns - description in detail of the devastation of the land (Micah 6:15).
They shall be ashamed of your revenues. The change of persons, in passing from indirect to direct address is frequent in the prophets. Equivalent to, 'Ye shall be put to the shame of disappointment at the smallness of your produce.'