The Devil, Satan, Lucifer, etc., are all names for the spiritual reality of Antichrist contrary to Divine Love. It is an intentional force that spreads like a cancer throughout Creation, feeding like a cosmic vampire on the negative energies of arrogance, fear, hatred and despair that finite beings give off.

But, it is not an eternal reality equiprimordial with God. It is an epiphenomenal reality, merely a secondary phenomenon, that has come into being as a result of the free will decisions of Creation to turn away from Love as the one true way of Life.

Antichrist is not a phenomenon necessary to the existence of God. God as Love is primordial reality without opposition, and in every respect without primordial otherness.

In order to thrive, Antichrist deceives, denies and betrays. It is "the father of lies", and is everything that is contrary to the Truth of Divine Love (John 8:44).