The mission of Joseph Smith was of a spiritual nature; and therefore, it is not to be expected that the discussion of scientific matters will be found in the Prophet's writings. The revelations given to the Prophet deal almost exclusively with the elucidation of so-called religious doctrines, and with such difficulties as arose from time to time in the organization of the Church. It is only, as it appears to us, in an incidental way that other matters, not strictly of a religious nature, are mentioned in the revelations. However, the Church teaches that all human knowledge and all the laws of nature are part of its religious system; but that some principles are of more importance than others in man's progress to eternal salvation.[A] While on the one hand, therefore, it cannot reasonably be expected that Joseph Smith should deal in his writings with any subject peculiar to natural science, yet, on the other hand, it should not surprise any student to find that the Prophet at times considered matters that do not come under the ordinary definition of religion, especially if they in any way may be connected with the laws of religion. Statements of scientific detail should not be looked for in Joseph Smith's writings, though these are not wholly wanting; but rather, we should expect to find general views of the relations of the forces of the universe.
[Footnote A: "And truth is knowledge of things as they are, and as they were and as they are to come."—Doctrine and Covenants, 93:24.
"Teach ye diligently and my grace shall attend you, that you may be instructed more perfectly in theory, in principle, in doctrine, in the law of the Gospel, in all things that pertain unto the Kingdom of God, that are expedient for you to understand;
"Of things both in heaven and in the earth, and under the earth; things which have been, things which are, things which must shortly come to pass; things which are at home, things which are abroad; the wars and the perplexities of the nations, and the judgments which are on the land, and a knowledge also of countries and kingdoms,
"That ye may be prepared in all things when I shall send you again to magnify the calling, whereunto I have called you, and the mission with which I have commissioned you."—Doctrine and Covenants, 88:78-80.
"And verily, I say unto you, that it is my will that you should hasten to translate my Scriptures, and to obtain a knowledge of history, and of countries, and of kingdoms, of laws of God and man, and all this for the salvation of Zion."—Doctrine and Covenants, 93:53.
"It (theology) is the science of all other sciences and useful arts, being in fact the very foundation from which they emanate. It includes philosophy, astronomy, history, mathematics, geography, languages, the science of letters, and blends the knowledge of all matters of fact, in every branch of art and research…….All that is useful, great and good, all that is calculated to sustain, comfort, instruct, edify, purify, refine or exalt intelligences, originated by this science, and this science alone, all other sciences being but branches growing out of this, the root."—Pratt, Key to Theology, chap. 1.]
[Sidenote: Man must not expect direct revelation in matters that he can solve for himself.]
It is not in harmony with the Gospel spirit that God, except in special cases, should reveal things that man by the aid of his natural powers may gain for himself. The Lord spoke to the Prophet as follows:—"Behold, you have not understood; you have supposed that I would give it unto you, when you took no thought, save it was to ask me; but, behold, I say unto you, that you must study it out in your mind; then you must ask me if it be right, and if it is right I will cause that your bosom shall burn within you; therefore, you shall feel that it is right."[A] Such a doctrine makes it unreasonable to look to the Prophet's work for a gratuitous mass of scientific or other details, which will relieve man of the labor of searching out for himself nature's laws. So well established is this principle that in all probability many of the deepest truths contained in the writings of Joseph Smith will not be clearly understood, even by his followers, until, by the laborious methods of mortality, the same truths are established. It is even so with the principles to be discussed in the following papers. They were stated seventy years ago, yet it is only recently that the Latter-day Saints have begun to realize that they are identical with recently developed scientific truths; and the world of science is not yet aware of it. However, whenever such harmony is observed, it testifies of the divine inspiration of the humble, unlearned boy prophet of the nineteenth century.
[Footnote A: Doctrine and Covenants 9:7, 8.]