Friedrich Seyler

Friedrich Seyler
Anabaptista larvatus by Friedrich Seyler
Born	13 December 1642 (1642-12-13)
Died	31 January 1708 (1708-02-01) (aged 65)
Other names	Friedrich Seiler, Fridericus Seilerus, Fridericus Seylerus
Occupation	Swiss theologian
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Friedrich Seyler (13 December 1642 – 31 January 1708), also spelled Friedrich Seiler, was a Swiss Reformed (i.e. Calvinist) pastor and theologian from Basel, noted for his work Anabaptista Larvatus on Anabaptism.

He is noted for his work Anabaptista Larvatus, a major polemical work on the history of Anabaptism and a refutation of Anabaptist "errors." The first part (182 pages) is a history of Anabaptism in 12 chapters, influenced notably by Heinrich Bullinger and Johann Heinrich Ottius. The second "Dogmatic Part" (510 pages) is a defense of the dogmatic doctrines disputed by the Anabaptists from the perspective of Reformed theology. The work addresses God and the Trinity, creation of Man, preservation and government of all things, Adam's fall, original sin, free will, redemption, election, scripture, saving faith, justification, incarnation, The Church, ministers, the ban or church discipline, baptism, communion, state, oath, and future life.

According to Harold S. Bender, "much more time is spent on the exposition and defense of the author's position as a Reformed theologian than on a statement of the Anabaptist position."