"The Father has a body of flesh and bones as tangible as man's; the Son also; but the Holy Ghost has not a body of flesh and bones, but is a personage of Spirit. Were it not so, the Holy Ghost could not dwell in us."
Doctrine and Covenants 130:22
This is a fact taken for granted by many of us who have grown up in the church, but it is fascinating in a lot of ways... primarily because it is so different from what many other people believe. I think that it says a lot of things to us that help us to understand God better. This tells us that God isn't some creature completely alien to our understandings. Although he is vastly superior in knowledge and power, he is like we are on a basic level. I think it makes calling him Father a lot more literal, a lot more real. It helps us to understand Christ's command to "be ye therefore perfect." ... we see and know that it is possible because God is perfect, and we are like him... and we have the potential to grow and become more and more like him and eventually reach perfection, as he has. And I think that it makes the whole Godhead more comprehensible to know that they aren't intertwined, three personalities in one being in some mysterious way... but three distinct beings, who are united in a spiritual way, because they have the same desires, and are working toward the same goal... our salvation. Off on a slight tangent, I was reading last night a quote from Joseph F. Smith that says that "we have nothing else to do save to keep in the narrow path that leads back to God our Father." That we have no other job or mission in this world besides that... a single purpose, a single focus... and, really, a unifying perspective... because we are all working towards the same thing. The Godhead is like that... one in purpose, focused on the same goal... wholly dedicated to teaching us and helping us to salvation. And when we have that as our focus as well, then we join with them... Heaven and Earth both uniting to save and unite the human family, and bring them home. ... I also like that God has arms because I'm hoping the first thing that happens after I die is that He gives me a huge bear-hug, welcoming me home. :)