Religion genre/form terms: information gathered on behalf of the Library of Congress... American Theological Library Association, et. al, c2012: Meditations (This heading is used for collections of thoughts on spiritual truths for use in meditation.; BT Devotional literature)
Merriam Webster online, June 2, 2015: meditation (def. 1 :a spoken or written discourse treated in a contemplative manner and intended to express its author's reflections or especially when religious to guide others in contemplation)
OED online, June 2, 2015: meditation (def. 2a: A discourse, written or spoken, in which a subject (usually religious) is treated in a meditative manner, or which is designed to guide the reader or hearer in meditation. Freq. in pl.)

Thoughts on spiritual truths intended for use in meditation.