Andreas Osiander

Andreas Osiander
Andreas Osiander
Born 19 December 1498
Gunzenhausen, Franconia
Died 17 October 1552
Education University of Ingolstadt
Church Lutheran
Ordained 1520

Andreas Osiander (19 December 1498 – 17 October 1552) was a German Lutheran theologian.



Born at Gunzenhausen in Franconia, Osiander studied at the University of Ingolstadt before being ordained as a priest in 1520. In the same year he began work at an Augustinian convent in Nuremberg as a Hebrew tutor. In 1522, he was appointed to the church of St. Lorenz in Nuremberg, and at the same time publicly declared himself to be a Lutheran. During the First Diet of Nuremberg (1522), he met Albert of Prussia, Grand Master of the Teutonic Knights, and played an important role in converting him to Lutheranism. He also played a prominent role in the debate which led to the city of Nuremberg's adoption of the Reformation in 1525, and in the same year Osiander married.

Osiander attended the Marburg Colloquy (1529), the Diet of Augsburg (1530) and the signing of the Schmalkalden articles (1531). The Augsburg Interim of 1548 made it necessary for him to leave Nuremberg, settling first at Breslau, then, in 1549, at Königsberg as professor of the newly founded Königsberg University, appointed by Albert of Prussia. Osiander lived and worked in Königsberg until his death in 1552. Osiander's son Lukas (1534–1604), and grandsons Andreas (1562–1617) and Lukas (1571–1638) also worked as theologians. His niece married the future Archbishop of Canterbury, Thomas Cranmer.


Title Page of Brandenburg-Nuernbergishe Kirchenordnung, 1533.
Title Page of an edition of the Vulgate from 1523.

Osiander published a corrected edition of the Vulgate Bible, with notes, in 1522 and a Harmony of the Gospels in 1537. In 1533, Brandenburg-Nuernbergishe Kirchenordnung vom Jahre 1533 was published, with Osiander assisting in both the source material the final editing. This combined order of worship and catechism was the first work to include the Keys section of Luther's Small Catechism, of which Osiander is a suspected author.

In 1543, Osiander oversaw the publication of the book De revolutionibus orbium coelestium (On the revolution of the celestial spheres) by Copernicus. He added a preface suggesting that the model described in the book was not necessarily true, or even probable, but was useful for computational purposes. This was certainly not the opinion of Copernicus, who was probably unaware of the addition. As a result, many readers, unaware that Osiander was the author of the preface, believed that Copernicus himself had not believed that his hypothesis was actually true.[1]

In 1550 Osiander published two controversial disputations, De Lege et Evangelio and De Justficatione. In these, he set out his view that justification by faith was instilled in (rather than ascribed to) humanity by Christ's divinity, a view contrary to those of Martin Luther and John Calvin [2] although he agreed with Lutheranism's fundamental opposition to Roman Catholicism and Calvinism. These beliefs were maintained after his death by Johann Funck (his son-in-law) but disappeared after 1566.


Osiander was a Christian mystic and his theology incorporated the idea of mystical union with Christ and the Word of God.[3] He believed that justification for a Christian believer resulted by Christ dwelling in a person. Contrary to Luther's belief that justification was imputed by God's grace, Osiander believed that the righteousness of a believer was accomplished by the indwelling of God; thus, God finds one righteous because Christ is in that person. [3] Calvin rejected these views of Osiander, as did Melanchthon and Flacius. Flacius' opposing view was that God justifies us by Christ's work of obedience on the cross, not by his presence in us.[4]


  1. ^ John David North, Cosmos: An Illustrated History, (University of Chicago Press, 2008) page 309-310; Gribbin, John, Science: A History, Penguin Books Ltd, ISBN 0-14-029741-3, 2003
  2. ^ Calvin, John The Institutes of the Christian Religion Book III, Chapter XI
  3. ^ a b Gonzales, J. "A History of Christian Thought" Abingdon Press (1975) p. 114–115
  4. ^ Gonzalez, J, "A History of Christian Thought" Abingdon Press (1975) p. 116–117


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