Splash - The scriptural difference between an elder and MS is that the elder must be 'qualified to teach'.
Good point, but therein lies the conundrum for the JWs. Is an elder 'qualified to teach' before he is appointed as an elder or only after he is appointed as an elder?
If it is before he is appointed as an elder then he was indeed 'qualified to teach' as a ministerial servant. But if it is only after he is appointed as an elder then he should not have been appointed as an elder as he was not 'qualified to teach'.
This was the whole argument of Paul in Romans 4:9-12.
On the other hand, the Bible lists practices and personal habits that prevent someone from being appointed as an elder or ministerial servant. Many of these are disfellowshipping offences. If a brother does not qualify then is it reasonable to conclude that his practices and personal habits disqualified him?
Of course, in a man-made religion under the control of a corporation none of this matters.