Calvin and Farel refuted him on the spot and had him arrested.

Berne, Basle and Zurich intervened and, when solicited for {177} an expression on the doctrine in dispute, spoke indecisively.

The triumph of his enemies at this rebuke was hard for Calvin to bear and prepared for the commission of the most regrettable act of his career.
[Sidenote: Servetus, 1531] The Spanish physician Michael Servetus published, in Germany, a work on the _Errors concerning the Trinity_.

His theory was not that of a modern rationalist, but of one whose starting point was the authority of the Bible, and his unitarianism was consequently of a decidedly theological brand, recalling similar doctrines in the early church.
Leaving Germany he went to Vienne, [Sidenote: 1553] in France, and got a good practice under an assumed name.

He later published a work called, perhaps in imitation of Calvin's _Institutio, The Restitution of Christianity_, setting forth his ideas about the Trinity, which he compared to the three-headed monster Cerberus, but admitting the divinity of Christ.