Story of Shiv and Sati

Shiv is the parmeshwar of the entire universe. Many names are associated with Shiv such as Rudra, Mahakal, Mahadev, Maheshwar, Mahesh and list goes on. Rudra is the purn avatar of Shiv, who resides in Kailash, Ved and Purans describes birth and death of all gods, but no ved or purans every described birth or death of Sada Shiv.