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In the Eastern Orthodox Church, akribeia (Greek: ἀκρίβεια, romanized: akriveia, akribia, akrivia, lit. 'accuracy, exactness, preciseness') is the strict adherence to the letter of the law of the Church.
In Eastern Orthodox canon law, there exists two notions: akriveia and economia. Akriveia, which is harshness, "is the strict application (sometimes even extension) of the penance given to an unrepentant and habitual offender." Economia, which is sweetness, "is a judicious relaxation of the penance when the sinner shows remorse and repentance."