Zechariah 13:2

And it shall come to pass in that day, saith the Lord of hosts, in the great Messianic period. that I will cut off the names of the Idols out of the land, so that the very names which had formerly been in the mouths of men everywhere were no longer mentioned, and they shall no more be remembered, the loathing of every form of superstition being so great that men would put aside every thought of the former idolatry and superstition; and also I will cause the prophets and the unclean spirit, who speaks through the false prophets, to pass out of the land. This is one of the results of the preaching of the Gospel, as we see also in the case of the people of Ephesus when Paul proclaimed the true God to them. Cf Acts 19:19.