As the work goes forward we see
the fulfillment of that which God spake to Moses in the Ten Commandments: “In
six days the Lord made heaven and earth, the sea, and all that in them is, and
rested the seventh day.” (Ex. 20:11.) It is of the creative events that took
place on each of these “days” that we shall now speak.
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.)
There is no revealed recitation
specifying that each of the “six days” involved in the Creation was of the same
duration. (Bruce R. McConkie, "Christ
and the Creation," Ensign, June 1982)