Alma 13

 Alma taught concerning our pre-mortal existence - 

"...this is the manner after which they were ordained—being called and prepared from the foundation of the world according to the foreknowledge of God, on account of their exceeding faith and good works; in the first place being left to choose good or evil; therefore they having chosen good, and exercising exceedingly great faith, are called with a holy calling, yea, with that holy calling which was prepared with, and according to, a preparatory redemption for such."  (Alma 13:3)

I specifically note that he calls the pre-mortal existence as "the first place".