 William the Silent made an agreement with Philip II of Spain in 1566 to protect Protestants, but only those who were natives of the Low Countries, placing Junius in danger.Several times he barely escaped arrest, and finally, after spending six months preaching in Limburg, he was forced to flee to Heidelberg in 1567.There he was welcomed by the elector Frederick II, and temporarily settled in charge of the Reformed church at Schönau; but in 1568 his patron sent him as chaplain with Prince William of Orange in his unfortunate expedition to the Netherlands.