THE IMMORTALITY OF SATAN

If God is immortal; is Satan also immortal? 
How does one know if one is in contact with God and not Satan for the way he or she lives?
First the determination of existence: then the exploration of its durability.
Soon  be clear who is the boss.
The Showdown.
Satan is on a hiding to nothing.
Ascertaining the nature of Reality in terms of Brahma-Nature comprising tamasic-evil Shiva (Satan) Vishnu (semi-divine) and Brahma (divine) at the end of 27 years of studies.