Last December, on Josephmas (i.e., of Joseph Smith the Seer), Dec. 23,
2007 at 10:27 pm, while perusing a book written by the Prophet Art Bulla,
the Holy Ghost bore record of this passage:

Lucifer, which means "light bearer" who was one of the first-born sons
of the Father, Jesus and I being first and second respectively, were male.

~~Teachings of the One Mighty and Strong

Primogeniture, n.
1. The state of being the firstborn of the same parents; seniority by
birth among children of the same family.
2. (Eng. Law) The exclusive right of inheritance which belongs to the
eldest son. Thus in England the right of inheriting the estate of the father
belongs to the eldest son, and in the royal family the eldest son of the
sovereign is entitled to the throne by _primogeniture_. ... _Blackstone_.

About twenty minutes later, I read this passage from the same book:

The great test of the heavens is whether all men would be saved, and thus
justice be done away, or whether some men should be saved who had sacrificed
and who were worthy, and that justice should reign...