[Sidenote: 1548] Next came a large influx of Bohemian Brethren, expelled from their own country and migrating to a land of freedom, where they soon made common cause with the Lutherans.
[Sidenote: 1558] Calvinists propagated the seeds of their faith with much success.

Finally the Unitarians, led by Lelio Sozini, found a home in Poland and made many proselytes, at last becoming so powerful that they founded the new city of Racau, whence issued the famous Racovian Catechism.

At one time they seemed about to obtain the mastery of the state, but the firm union of the Trinitarian Protestants at Sandomir [Sidenote: 1570] checked them until all of them were swept away together by the resurging tide of Catholicism.

Several versions of the Bible, Lutheran, Socinian, and Catholic, were issued.
So powerful were the Evangelicals that at the Diet of 1555 they held services in the face of the Catholic king, and passed a law abolishing the jurisdiction of the ecclesiastical courts.

This measure, of course, allowed freedom of all new sects, both those then in control of the Diet and the as yet unfledged Antitrinitarians.