Christianity, Judaism, and Islam, Three of the most important religions in western culture stem from the same original text. In today's world, many of their branches are didactic and rule-bound, treating their holy texts as technical manuals rather than food for thought.

Presented herein is the other side of their faiths, which focuses on the personal and lived experience of the divine. Each of these texts explores the increasingly experiential and personal experience of divinity, in sharp contrast to the mainstream faith's increasing structure and organisation over the last two millennia.

The four works trace an evolution of mystical trends: