Final answer:
The phrase 'twelve tribes in the Dispersion' in the book of James refers to unnamed Christians living outside Palestine, representing the universal nature of the Christian faith.
Step-by-step explanation:
In the book of James, the phrase 'twelve tribes in the Dispersion' refers to unnamed Christians living outside Palestine. These were believers who had been dispersed or scattered from their homeland, similar to the Jewish diaspora. The term 'twelve tribes' is symbolic and represents the universal nature of the Christian faith, encompassing believers from various ethnic backgrounds.