Both Orthodox and Catholic Bibles include the inter-testamental books which we refer to as the Deutero-Canonical Books (Secondary List/Secondary Authority). These were included when "The 70" translated the Hebrew scriptures into Greek in what came to be known as the Septuagint ("of the 70") around 100 B.C. Though the Orthodox version varies in small ways from the Catholic, these tabs will satisfy the need (with some adaptation).
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