The 4 Scriptural steps required before anyone should be considered an outsider: Note that the congregation is ALWAYS involved before this step is taken, so the congregation would know the reason why someone is to be disciplined:
Step 1: "Moreover, if your brother commits a sin, go lay bare his fault between you and him alone. If he listens to you, you have gained your brother.
Step 2: But if he does not listen, take along with you one or two more, in order that at the mouth of two or three witnesses every matter may be established.
Step 3: If he does not listen to them, speak to the congregation.
Step 4: If he does not listen even to the congregation, let him be to you just as a man of the nations and as a tax collector."