The Doctrine of Justification by Faith alone, or sola fide, was the key of the Protestant Reformation. Its recovery was from the darkness created by the dominance of man-made religiosity, which held that justification was accomplished through faith plus good works and/or religiosity. This grew into people being required to do religious acts in order to be considered righteous. The driving force of the Reformation was captured by the Latin phrase Post tenbras lux (After darkness, light).