A phrase deriving from the Nadere Reformatie movement in the seventeenth century Dutch Reformed Church and widely but informally used in Reformed and Presbyterian churches today. It refers to the conviction of certain Reformed Protestant theologians that the church must continually re-examine itself in order to maintain its purity of doctrine and practice. The term first appeared in print in Jodocus van Lodenstein, Beschouwinge van Zion (Contemplation of Zion), Amsterdam, 1674.
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