MYSTE'RIOUS, adjective [See Mystery.] Obscure; hid from the understanding; not clearly understood. The birth and connections of the man with the iron mask in France are mysterious and have never been explained.
1. In religion, obscure; secret; not revealed or explained; hidden from human understanding, or unintelligible; beyond human comprehension. Applied to the divine counsels and government, the word often implies something awfully obscure; as, the ways of God are often mysterious