There are in use today several approved Roman Catholic versions of the Holy Scriptures, but the primary one is the Rheims-Douai (commonly known as the Douai or Douay). Only Church-approved versions are used throughout this book. Unless otherwise stated, Scripture quotations are taken from the RheimsDouai. References within brackets (generally referring to verses in the book of Psalms) indicate verse locations in other Church-approved translations.

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