Reunited? What does that mean? I've heard that from Mormons.
MM
You are correct.
Mormon doctrine says that after death, we would return to God and become a god ourselves. Therefore, Mormons believe that when Ecclesiastes 12:7 says the spirit goes back to God, it supports their doctrine of premortal existence.
Mormon doctrine says that once a man is exalted to godhood, he and his wife will reproduce offspring for eternity. These spirit children will in turn inhabit physical bodies and have the opportunity to become gods as well. This privilege is reserved for those who go through the sacred marriage ceremony in the Temple and live in obedience to Mormon teachings.
But it does not end there. God the Father is, therefore, believed to be married to God the Mother, and together they are producing spirit children, therefore All men and women are thus the offspring of this heavenly union and at physical death, we return to that spiritual union in heaven.
Of course, as with all Mormon teachings and doctrine, there is NO Biblical support. It is all Star Trek thinking!