The Psalms are the prayer book of the Bible. The Psalms are poetry, full of images intended to stand out of the text and in our minds like structures in pop-up books. Towers and birds and trees and rivers. Grasp these images and let your mind hold them all day long. Meditate over them. Meditation is a word best described as what a lion does over its prey. It is a deep growling, chewing, grasping.