Brigham Young on the meaning of “Mystery”

What is a mystery? We do not know, it is beyond our comprehension. When we talk about mystery, we talk about eternal obscurity; for that which is known, ceases to be a mystery; and all that is known, we may know as we progress in the scale of intelligence. That which is eternally beyond the comprehension of all our intelligence is mystery, yet this word is used by the translators of the Bible. They write about mystery, and talk about mystery; what are they talking about? I do not know what they mean, nor what they wish to convey by that word, and they do not know themselves. This language is made use of in the Bible, because they have nothing better. Things transpire almost every day in our lives which we class under the term mystery, for want of a better term. What does it mean, in reality? Why, nothing at all. But for the accommodation of those who speak the English language, we will continue to use the term, and proceed to examine the negative of true riches. (JOD 1:274 | August 14, 1853, italics in original)