It is very clear from the New Testament Scriptures that a great concern of JESUS was that HE wanted His Church to function under His guidelines and not under man-made religious guidelines which is a hierarchy type of System.
The New Testament writers also taught quite clearly that the Church is not to function under a hierarchy type of system, and yet that is exactly the type of System that the Institutional Church functions under.
It cannot be over-emphasized enough how important that the Body of Christ (His Church) is to Christ. So, for the Church to function in a type of System that is exactly the type of System that Christ taught against, is no small matter. It is a very serious matter that should be of "grave concern" to Christians.
JESUS told His disciples that the world likes to lord their positions of authority over others. JESUS was very clear to His disciples that they were not to function in that manner.
JESUS gave gifts to His Church. These gifts of different functions in the Body of Christ are not to be lorded over others, and yet the way that the Institutional Church System is set up to function does exactly that. In fact, having a Spiritual title in front of one’s name, such as: Apostle Stevens, Prophet Stevens, Pastor Stevens, Bishop Stevens, Rev. Stevens, Elder Stevens, etc., is actually lording one’s position in the Church over others.
JESUS told His disciples that for them not to let anyone call them RABBI. The underlying message that JESUS was conveying to His disciples was, "DO NOT" put Spiritual titles in front of your name because that is lording it over others.
The New Testament Scriptures are clear that in Christ’s Church, each and every Believer in Christ is to function as part of the "Royal Priesthood" of Believers in Christ. This does not take place in the Institutional Church System because it operates under a hierarchy type of System which the New Testament Scriptures clearly teach against.
I am often amazed at how much truth is overlooked in God's Written Word which can be the result of just simply having not dug deep enough to examine the Scriptures much more carefully.
Please read on this site the article The "Royal Priesthood" of the Believer in Christ.