French Protestant theologian and metaphysician Moses Amyraut, also known as Amyraldus, is perhaps most noted for his modifications to Calvinist theology regarding the nature of Christ's atonement, which is referred to as Amyraldism or Amyraldianism.

He publishes his Traité des religions in 1631, and from this year onward he is to be a foremost man in the French church.

Chosen to represent the provincial synod of Anjou, Touraine and Maine at the national synod held in 1631 at Charenton, he is appointed as orator to present to the king The Copy of their Complaints and Grievances for the Infractions and Violations of the Edict of Nantes.

The university of Saumur is to become the university of French Protestantism.

Amyraut has as many as a hundred students in attendance at his lectures.

One of these is William Penn, who will later go on to found the Pennsylvania Colony in America based in part on Amyraut's notions of religious freedom.