An elder that's a misnomer for a start ; If an elder who has suddenly been given the right and ability presumably from Jehovah to advise on how to manage a persons or families finance then it should be sauce for the gander let's have a look at the elders financial arrangement first just to check he has his own house in order.
If an elder should sit down next to me which is very unlikely as I am now light years away from the Witnesses but if I was back in the Big Lie I would have another form printed ready with the expense details of my plan of expenditure for keeping a roof over my head especially as I was told to expect the New World any time during the 1950s when I was a young man.
The first thing I would say to the financially non qualified elder would be You are are having a laugh yes? and the second thing I would say is Have I got stupid across my forehead ?