How does Brian L. Weiss use imagery in Many Lives, Many Masters?

Imagery:

"I see white steps leading up to a building, a big white building with pillars, open in front. There are no doorways. I'm wearing a long dress. . . a sack made of rough material. My hair is braided, long blond hair."

"It is as if a large diamond were to be inside each person. Picture a diamond a foot long. The diamond has a thousand facets, but the facets are covered with dirt and tar. It is the job of the soul to clean each facet until the surface is brilliant and can reflect a rainbow of colors."