Spirit children of heavenly parents are born composed of spiritual matter. There is no such thing as immaterial matter.
Rather than trying to convert a loved one by preaching to him, a much more powerful way would be to act as a worthy example of the believers.
Turning the hearts of the fathers to the children and the hearts of the children to their fathers refers to genealogy work.
What effect does being sealed to a husband in the Mormon Temple have on one’s relationship to one’s birth parents?
Being sealed in the temple as the wife of a husband does nothing to cancel the relationship of a daughter sealed to her own parents.
With children approaching adulthood the power of example is much stronger than the power of words in effecting behavior.
In second marriages, if loving, accepting relationships have not been established between the new parents and their foster children, that marriage is headed for trouble.
We must have faith in God that He can bring our wayward children back to us and the promises of the Mormon Temple mean that God will bring our children back to us if we are faithful.
In the state of exaltation in the celestial kingdom the line of authority will descend from father to son and from mother to daughter-in-law.
Mormons should consult with the temple president to find out if a stillborn child can be sealed by proxy to its parents.