Let me throw out another idea for consideration though... I was an elder's daughter and now I have children who are the sons of an elder. I've seen both sides of the fence. It can be hard, because the children are expected to act better some how. People are people and will make mistakes. Being a "believing child", does not imply perfect any more than any other Christian is perfect. Can an elder's child make mistakes? Can he be in need of repentance? Not only can he, he will. Does such disqualify a man as an elder? I don't think so, as long as such is not a long lasting habitual thing. But if a child enters into a long standing habitual sin (e.g. drug abuse) and refuses to repent or leaves the faith altogether, that is a different matter indeed.

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--Laura

O Lord, I know the way of man is not in himself; It is not in man who walks to direct his own steps.
Jeremiah 10:23 (NKJV)