The devil, who once was the carrier of the light of justice, of love and holiness, has become at once – through his rebellion against God -  the absolute tool of darkness, hatred, evil, lie and everything that contributes to the disaster of death and corruption. He was, and will always be darkness, lie and perdition, with a clear purpose – to rebel against everything that comes from God and against God’s providence and man in particular. He became, and will always be the heir of death and hell, having the main goal to deceit and attract on his side as many people as possible.

(Translation from Gheronda Iosif Vatopedinul, Dialoguri la Athos, Editura Doxologia, p. 21)