this is how I have explained it.
The concept is something we accept and use in our daily lives.
A single man can be 100% a father, 100% a son and 100% a grandfather. Three things all that the same time.
not a perfect fit but it does encompass the one being holding three roles.
That makes too much sense for Mormons to accept it. I’ve used the water vapor, liquid water, and ice analogy, too. And it was too much for them.