Friedrich Samuel Gottfried Sack (1738–1817) was a Prussian theologian, court preacher, and Church governor.
[1] Friedrich Ferdinand Adolph Sack was born at Berlin on 16 July 1788, and succeeded his father as court and cathedral preacher.
[3] Though leaning somewhat towards rationalism, he yet firmly opposed the inroads which Kant's and Fichte's speculations made upon evangelical doctrine.
[4] For some years he stood in the closest relations to the young Schleiermacher, and rejoiced in a belief in the promise of good which the latter would bring to the Church.
When this young divine first issued his celebrated Reden (1799), Sack openly expressed his paternal grief at what seemed to him a leaning towards pantheism in this work.