Γρηγόριος Νύσσης

January 10 is the feast of St. Gregory of Nyssa. From one of his letters:

The Lawgiver of our life has enjoined upon us one single hatred. I mean, that of the Serpent: for no other purpose has He bidden us exercise this faculty of hatred, but as a resource against wickedness. “I will put enmity,” He says, “between thee and him.” Since wickedness is a complicated and multifarious thing, the Word allegorizes it by the Serpent, the dense array of whose scales is symbolic of this multiformity of evil. And we by working the will of our Adversary make an alliance with this serpent, and so turn this hatred against one another, and perhaps not against ourselves alone, but against Him Who gave the commandment; for He says, “Thou shalt love thy neighbour and hate thine enemy,” commanding us to hold the foe to our humanity as our only enemy, and declaring that all who share that humanity are the neighbours of each one of us. But this gross-hearted age has disunited us from our neighbour, and has made us welcome the serpent, and revel in his spotted scales.