Matthew 18: "If your brother sins against you."
Notice that these verses never mention a clergyman, a board of directors, the elders, or anyone in leadership. Jesus is speaking to just regular Christians as individuals and as the Church.
1. Moreover if thy brother shall trespass against thee, go and tell him his fault between thee and him alone: if he shall hear thee, thou hast gained thy brother.
2. But if he will not hear thee, then take with thee one or two more, that in the mouth of two or three witnesses every word may be established.
3. And if he shall neglect to hear them, tell it unto the church:
4. But if he neglect to hear the church, let him be unto thee as an heathen man and a publican.