Which religious publishing company pioneered the 'Spiritual Wisdom Circle' loyalty program that offers tiered benefits based on engagement with religious texts?

In today's digital age, even religious organizations and spiritual publishers have embraced modern marketing strategies. One notable trend is the rise of loyalty programs and subscription services for religious texts, commentary, and spiritual growth resources. How well do you know the innovative loyalty programs that have transformed how people engage with religious and philosophical content? Test your knowledge with this challenging question!

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Zondervan (HarperCollins Christian Publishing)
Penguin Random House Spiritual Division
Shambhala Publications
Oxford University Press Religious Studies