And it shall come to pass in that day, saith the LORD of hosts, that I will cut off the names of the idols out of the land, and they shall no more be remembered: and also I will cause the prophets and the unclean spirit to pass out of the land. I will cut off the names of the idols - There shall not only be no idolatry, but the very names of the idols shall be forgotten, or be held in such abhorrence that no person shall mention them. This prophecy seems to be ancient, and to have been delivered while idolatry had prevalence in Israel and Judah.
I will cause the prophets - All false teachers.
And the unclean spirit - That which leads to impurity, the spirit of divination; the lust of the flesh, and of the eye, and the pride of life. Satan shall have neither a being in, nor power over, the hearts of sincere believers in Christ.