apatheia
A state of mind in Stoic philosophy in which one is free from emotional disturbance; the freedom from all passions.
uncountable
But, one might ask, how can the temporal event of God in our midst be the same as God's event to himself in his eternity if so absolute a distinction is drawn between the enarrable contents of history and the "eternal dynamism" of God's immutability, apatheia, and perfect fullness?
Where it comes from
Borrowed from Ancient Greek ἀπάθεια (apátheia). Doublet of apathy.
Adapted from the Wiktionary entry apatheia (CC BY-SA 4.0).