I began to understand [that] the righteousness of God is that by which the righteous lives by a gift of God, namely by faith. And this is the meaning: the righteousness of God is revealed by the gospel, namely. the passive righteousness with which [the] merciful God justifies us by faith…Here I felt that I was altogether born again and had entered paradise itself through open gates.
– Martin Luther
as quoted by Piper, John; When I Don’t Desire God: How to Fight for Joy; Crossway; Wheaton, Ill.; copyright 2004; p. 87