As a seventeen-year-old, Philip heard Luther defend his teachings at the Diet of Worms. Several years later, after meeting with Luther's colleague Philipp Melanchthon, Philip became one of the Reformation's greatest supporters. He was also a supporter of the Swiss Reformer, Ulrich Zwingli. In 1529, Philip organized an important summit with a number of Reformation leaders, including Luther and Zwingli, in an effort to unify the budding reform movement. He also helped found a university in Marburg to train Protestant leaders and theologians.

Reformers