Which marketing strategy was primarily responsible for the Gideons International distributing over 2 billion copies of the Bible worldwide since 1908?

Religious literature represents one of history's most enduring forms of 'product marketing.' From ancient scrolls to modern spiritual bestsellers, sacred texts have used various distribution and marketing strategies to reach believers. This poll tests your knowledge about the marketing phenomenon behind one of the world's most distributed religious texts in modern history, revealing how traditional wisdom meets contemporary marketing approaches.

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Hotel room placement strategy - providing free Bibles in hotel/motel rooms worldwide
Church-based subscription model - creating the first religious text monthly subscription service
Celebrity endorsement campaigns - paying religious leaders for promotional testimonials
Buy-one-give-one model - selling premium editions to fund distribution of standard editions