What I mean by offspring is that we all existed as self existent intelligences for an eternity past and that God the Father, through the process of procreation through a Mother in Heaven has given birth to our spirits which has the effect of combining our intelligences with spirit matter to create the spirit sons and daughters of God.I'm not sure what you mean by "offspring". Do you believe the Father God had sex with Mary?
Doctrine and Covenants 93:29
29 Man was also in the beginning with God. Intelligence, or the light of truth, was not created or made, neither indeed can be.
Doctrine and Covenants 131:7-8
7 There is no such thing as immaterial matter. All spirit is matter, but it is more fine or pure, and can only be discerned by purer eyes;
8 We cannot see it; but when our bodies are purified we shall see that it is all matter.