The root of the word Nicolaitans comes from Greek nikao, to conquer or overcome, and laos, which means people and which the word laity comes from. The two words together especially means the destruction of the people and refers to the earliest form of what we call a priestly order or clergy which later on in church history divided people and allowed for leadership other than those led by the spirit of the risen Lord. A good translation of Nicolaitan would be "those who prevail over the people."
This clerical system later developed into the papal hierarchy of priests and clergy lording over the flock. The Council of Trent stated, "If anyone shall say that there is not in the Catholic Church a hierarchy established by the divine ordination, consisting of bishops, presbyters and ministers, let him be anathema."
It is not the question of the ministries but rather in the separation of them into a hierarchy over the people. This very idea was taken over by the Protestants with their own corruption of leadership roles and coverings. The Church of Ephesus was commended for hating the deeds of the Nicolaitans. The wrong separation of the clergy from the laity is a great evil in God's sight and He hates the lust for religious power over others.
There is an ungodly spiritual authority in the Church today, which is nothing more than the prideful spirit of control, manipulation, domination and intimidation and a rebellion of the rightful authority of God.
