Elder Bruce R. McConkie labeled the Creation as one of the “very pillars of eternity itself”, along with the Fall and the Atonement, and I don’t think it is an exaggeration to say that the doctrine of the Creation is a crucial part of our belief system as members of The Church of Jesus Christ of Latter-day Saints. When the Plan of Salvation was presented to us by our Father in Heaven we learned that we would have to leave His presence to live in a place where we would have the freedom to choose who we wanted to be. Our new home would eventually be known to us as earth.
Due to our acceptance of modern revelation by inspired men such as Joseph Smith, the LDS belief regarding the Creation can differ greatly from the doctrine taught and accepted by other Christian churches. I hope that those of other faiths will not be afraid to leave their own beliefs regarding the Creation in the comments section as I am deeply interested in learning how we might differ, and of course, what areas of common ground we can find.

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We believe that under the direction of God the Father and through the power of the Priesthood, Jesus Christ created this world and everything in it, as well as many other worlds. In Moses 1:33, God the Father said “And worlds without number have I created…for mine own purpose; and by the Son I created them, which is mine Only Begotten…. And as one earth shall pass away, and the heavens thereof even so shall another come; and there is no end to my works.” In this scripture, we learn that the Creation of the earth and other things we know (the sun, moon, stars, galaxies, etc) is placed in a much larger context of ongoing creations of innumerable inhabited earths with their own respective heavens (in all of which Christ played a central role). Source.
All things created physically were first created spiritually. From scripture revealed through the Prophet Joseph Smith, we know that in the work of the Creation, the Lord organized elements that had already existed. We do not believe in creation”ex nihilo” or ”out of nothing.” “I, the Lord God, created all things, of which I have spoken, spiritually, before they were naturally upon the face of the earth…. And I, the Lord God, had created all the children of men; and not yet a man to till the ground; for in heaven created I them; and there was not yet flesh upon the earth, neither in the water, neither in the air” (Moses 3:5).
The Old Testament account of the Creation found in Genesis, as well as the accounts found in Moses and Abraham, break the creation up into six time periods, referred to as “days”. Elder McConkie talked about the meaning of the word “day” in this context:
But first, what is a day? It is a specified time period; it is an age, an eon, a division of eternity; it is the time between two identifiable events. And each day, of whatever length, has the duration needed for its purposes. One measuring rod is the time required for a celestial body to turn once on its axis. For instance, Abraham says that according to “the Lord’s time” a day is “one thousand years” long. This is “one revolution … of Kolob,” he says, and it is after the Lord’s “manner of reckoning.” (Abr. 3:4.)
Though we may not know how long it took, or understand exactly how such an organization of spirit matter can be accomplished, we certainly know it was magnificent! First, Christ formed and organized the earth. He divided light from darkness to make day and night. He formed the sun, moon, and stars. He divided the waters from the dry land to make seas, rivers, and lakes. He made the earth beautiful and productive. He made grass, trees, flowers, and other plants of all kinds. These plants contained seeds from which new plants could grow. Then He created the animals—fish, cattle, insects, and birds of all kinds. These animals had the ability to reproduce after their own kind.
After all of this was done, it was time for the most glorious act of them all, the creation of man. Our spirits would be given bodies of flesh and blood so they could live on earth. “And I, God, said unto mine Only Begotten, which was with me from the beginning: Let us make man in our image, after our likeness; and it was so” (Moses 2:26). And so the first man, Adam, and the first woman, Eve, were formed and given bodies that resembled those of our heavenly parents. “In the image of God created he him; male and female created he them” (Genesis 1:27). By this time, six time periods, or “days” had passed, and the Lord declared His work very good and rested for a time.
I believe God not only gave us our bodies and opportunity to experience mortal life and be tested, but that He created this world filled with beauty that we might have joy.
Roaring waterfalls,

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great mountains,

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rainbows,

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flowers,

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creatures of the land and sea,

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and of course our beautiful bodies which are capable of achieving so much. What glorious gifts our Father in Heaven has provided for us through the Creation!