If there is a God, it certainly isn't responsible for the literature in the bible
2 Tim 3:16
16 All Scripture is inspired of God and beneficial for teaching, for reproving, for setting things straight, for disciplining in righteousness, 17 that the man of God may be fully competent, completely equipped for every good work.
Eyes Open: All scripture is written by humans and may or may not be beneficial for any number of things. :)
I'm just very saddened that people are worried about some divine being causing mass destruction having once believed the same thing and since come to understand that Daniel told the Jews under the Greeks they would be saved and that Revelation was foretelling the destruction of the Roman empire by God.
Armageddon didn't happen then when it was supposed to, and it ain't gonna happen now or in the future. We have to sort our problems out ourselves... problems like people believing in fallacies of which certain types of interpretations lead to high control groups.
But in answer to your question, I don't think they would be saved. They perform works in Jesus' name, but he would call them workers of lawlessness. I don't know about their children, though...