God is believed to be the Supreme Being the Real and the One, the Creator of the Most Powerful and the Knower, the Eternal, The Determined Destiny, and the Judge of the Universe. God is the Most Merciful. God is one and intangible. God does not give birth and is not born.
Devil is a rebellious creation of God. They rejected orders from God and were sentenced to live in hell forever.
I believe the intention of the devil is to destroy the one thing that GOD values above all thing in the entire universe and that is Man, Now the devil doesn't even need to do that as we are perfectly capable of doing that ourselves.