She Will Be Saved Through Childbearing

The key question is what does through mean when Paul says she will be saved, women in general will be saved through childbearing? Some have suggested that through childbearing refers to the birth of Jesus. There is another possibility for what through means and that was the clue I saw in 1 Corinthians 3, 15 where Paul uses this very word in a similar situation and it means something very different.