Inspired by the teachings of John Wycliffe, which he helped translate into Czech, Hus is seen as a key predecessor to the Protestant movement of the sixteenth century. He was an advocate of church reforms, such as using Czech as the liturgical language, aligning the church's practices with teachings contained in the Bible, limiting the power of the church to spiritual matters, and stopping the sale of indulgences. His followers became known as Hussites.
He was excommunicated from the Catholic Church in 1412 for insubordination. After being promised safe passage to attend a meeting that was intended to discuss the differences in the church, Hus was detained and put on trial. Refusing to give up his beliefs, he was found guilty of heresy against the doctrines of the Catholic Church and was burned at the stake on 6 July 1415.