"And I, God, said: Let there be light; and there was light." (Moses 2:3)
Several possibilities have been suggested.
Some see this event as consonant with the prevailing scientific view
that describes the birth of our universe as a sudden burst of light and
energy of an unimaginable scale. Others see this phrase as referring to
a "local" event whereby the natural light of the sun was created.
In contrast to such naturalistic readings is the notion that the light
was the result of God's presence. President John Taylor wrote that God
"caused light to shine upon (the earth) before the sun appeared in the
firmament; for God is light, and in him there is no darkness (1 John
1:5). He is the light of the sun and the power thereof by which it was
made; he is also the light of the moon and the power by which it was
made; he is the light of the stars and the power by which they are made."
Doctrine and Covenants continues this description, making it clear this
light was something over and above mere physical light as generally
conceived, since it not only "enlighteneth your eyes" but also
"quickeneth your understandings," governs and "giveth life to all
things," and "proceedeth forth from the presence of God to fill the
immensity of space."
Related to these concepts is the idea that the heavenly hosts were part
of the light on Day One of the Creation. For example, the Jewish book of
Jubilees reports that on the first day God created various ranks of
angels along with "all of the spirits of his creatures which are in
heaven and on earth" (O. S. Wintermute, Jubilees, 2:2).
and Modern Perspectives on the Book of Moses."