From this link
In our premortal life, we were taught lessons that prepared us to assist Heavenly Father in bringing about the salvation of His children (see D&C 138:56).
For a non Christian like me, especially English is not my mother language, it's difficult to understand a sentence which came from a Christian world.
That's why to me the word "we" in the quote is ambiguous since it can be:
A. We = the elects
B. We = all humankind
Hence the question.