The Cloud of Unknowing – Author Unknown

A contemplative prentice should be occupied, the which be these—Lesson, Meditation, and Orison: … they may be called—Reading, Thinking, and Praying
Love Mercy, Do Justice, and Walk Humbly with God
Cloud of Unknowing, Unknown Author, Late 14th century, Middle English
A contemplative prentice should be occupied, the which be these—Lesson, Meditation, and Orison: … they may be called—Reading, Thinking, and Praying