False doctrines in the church in Ephesus were issues of the heart, just as it is in present churches. The men that were positioned as good teachers in the beginning, loose their ways with time, as they are given status and powers over decisions and others in the congregation, as well as in society.
Under these influences, faith is replaced by greed. Discordance results among people, leading to divisions within the Church. Unavoidably, the spirit of the Church is affected when the work of God is not manifested anymore. The interpretation of the Gospel is changed to suit the personal agenda in pursuit of benefits.
As a result, people leave the Church, whose mission once clear, becomes the vision of a few in power. The congregation seeks a purer teaching in other places where love, conscience, and faith are its foundation, after loosing hope that false teachers will acknowledge and will repent from their soul-driven nature. Where Satan dwells, the fruit perishes.