Through it all, Rowling didn't really fight back. Talk too much about her faith, she feared, and it would become clear who would live and who would die and who might actually do both. After six books with no mention of God or Scripture, in the last book Harry discovers on his parents' graves a Bible verse that, Rowling says, is the theme for the entire series. It's a passage from I Corinthians in which Paul discusses Jesus' Resurrection: "The last enemy that shall be destroyed is death."
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