Yes
God is supernatural.
No one know's who God is in Supernatural.
It is never clearly stated, but there are suggestions that (the prophet) Chuck might be god.
Supernatural, technically. He is an immortal God.
The supernatural virtues are three theological virtues bestowed by God: faith (trust in God's revelation), hope (confidence in God's promises), and charity (love of God and neighbor). These virtues are considered supernatural because they are infused by God into the soul to enable a person to live a life in union with God.
If you believe in supernatural events but not God, you would most likely be deemed Agnostic. I may not be right about that though...
God did not die on Supernatural. It was believed that he may have died because he was not interfering with the events of Heaven, Hell or Earth. However, the season 5 finale showed Chuck to be God and that he was alive and well.
Some people say that supernatural powers do or don't exist. In actuality supernatural powers do exist. People like ghost hunters and priests who perform exorcists encounter supernatural powers or beings such as ghosts, demons, and angels. If you are part of Christianity or almost any other religion they speak of some god. In my case I am a Christian so I believe in God. I also believe in angels which are supernatural beings, as well as demons. So supernatural powers do exist, but I don't believe that you should mess with supernatural powers because they can be really dangerous.
Supernatural Season 4 Part 1 is out on sale now. Part 2 will be out soon.
WHEN WE HEAR THE WORD SUPERNATURAL, WE TEND TO THINK OF SPIRITS, GHOSTS, OR SOME SORT OF PARANORMAL OTHER WORLDY ENTITY. jESUS DIDNT CLAIM TO BE SUPERNATURAL , HE DID SAY THAT HE WAS GOD, HIM AND GOD ARE THE SAME PERSON. HE WAS NOT OF THIS WORLD, HE WAS NOT SUPERNATURAL- HE WAS DIVINE, A DIVINE ENTITY NOT OF THIS WORLD.
God is not human and there are no physical needs in the supernatural realm. Therefore, God does not sneeze.
Eventually, yes, Castiel is able to meet God.