In the Beginning

Sometime before or after the Big Bang:

Genesis 1:1

In the beginning God created the heaven...

Moses 2:1

I am the Beginning and the End, the Almighty God; by mine Only Begotten I created these things; yea, in the beginning I created the heaven...

Abraham 4:1

And then the Lord said: Let us go down. And they went down at the beginning, and they, that is the Gods, organized and formed the heavens...

http://eom.byu.edu/index.php/Creation,_Creation_Accounts