Francis David’s selected sermons were published by the printing press of Gyulafehérvár in 1569. These sermons are structured almost identical: biblical text, summary, lessons and the proper sermon. Most of the sermons, which adhered very strictly to the explanation of the text, were preached probably in the court of John Sigismund, Prince of Transylvania, while others were at services and workshops for priests who came to the religious disputes.