"spiritual knowledge" is correct and usable in written English.
You can use it when referring to knowledge or understanding of the spiritual world, metaphysical concepts, or religion. For example, "The monk had acquired a deep understanding of spiritual knowledge during his years of meditation."
To the devotee he holds out the path of justice and spiritual knowledge.
The society was thus both a centre of spiritual knowledge and a source of social prestige.
It is important to emphasize that Augustine's theory of illumination concerns all knowledge, and not specifically mystical or spiritual knowledge.
In many Indigenous communities, art works have long had dual functions as historical sources, as repositories of cultural or spiritual knowledge, and as maps of territory.
Traditionally spiritual knowledge was not shared outside of the Ngarluma's own people, who among themselves hold specific roles for knowledge-keeping.
TUMBANG SAAN, INDONESIA — In this village near the heart of Borneo's great, dissolving rainforest, Udatn is regarded as a man of deep spiritual knowledge.
[Saint or Spiritual Slacker? Test Your Religious Knowledge].
Our previous work described and validated such a comprehensive measure that was designed to assess political and spiritual leanings, knowledge of evolution, distrust of and knowledge about the scientific enterprise, and attitudes toward and objections against evolutionary theory (Hawley et al. 2011).
Creativity becomes the producer of tangible and spiritual assets of knowledge society since it is capable of resisting standardized thinking and social risks; turning professional knowledge into the dynamics of action.
For humans had lost their spiritual and aesthetic knowledge of forest, wood and bosque, seeing only exploitation and utility in trees.
It sought an intuitive and spiritual form of knowledge, regarded by its proponents as higher than that which science could provide.
