confessary

Etymology
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Noun

 * 1)  One who makes a confession.
 * 2) * 1708, Dr., preface to , The Divine Right of Episcopacy Asserted
 * God hath left power to the Church, that is, to the Priests of the Church, to absolve all sinners who truly repent and believe in Him; and therefore directs the Confessary to absolve the confessing penitent of all his sins in the name, &c.