The Stream and the Sapphire by Denise Levertov.

Denise Levertov developed her theology as she wrote her poems. She sought to capture the truth of experience in poetry and gradually moved from skepticism to faith as she discovered truth in Christianity. Her father, Paul Levertoff, was an Anglican priest of Russian Jewish descent, and her mother, Beatrice Spooner-Jones Levertoff, was a devout Welsh Christian. Both parents descended from highly religious families that embraced a variety of Judeo-Christian mysticism that informs much of Levertov’s poetry, especially in her sensitive treatment of nature.