He was made an abbot of a royal abbey, Fécamp, until he was called to Avignon. Fécamp was in the Duchy of Aquitaine, lands owned by the English king (in this case Edward III), and Roger was given the task in 1328 of summoning Edward to pay homage to the King of France, Philip VI, inside of whose kingdom Aquitaine lay. Roger's trip to England was fruitless: Edward ignored the summons, and Roger returned to France.
Despite this failure, in December of that year he was named Bishop of Arras and a councilor to king Philip. In less than a year, he was promoted to Archbishop of Sens, and a year after that was moved to Rouen. In an assembly of French clergy with Philip to discuss the judicial powers of ecclesiastical authorities, Roger argued impressively for ecclesiastical jurisdiction over temporal authority, gaining the admiration of his peers.
Pierre Roger was made a cardinal by Pope Benedict XII and "received the red hat" on 5 May, 1339. After Benedict's death in April 1342, a conclave of 18 out of the existing 19 cardinals (one had gout and could not attend) met on 5 May, and by the 7th had elected Pierre Roger as the next pope. He chose the name Clement VI.
His predecessor was opposed to "lazy" clerics who did not administer their parishes and dioceses, simply accepting the tithes and delegating the work. Benedict was careful about choosing pastors and bishops. Clement took a different approach, declaring that votes in monasteries for abbot were void. He wanted the right to appoint whom he liked and grant favors to those loyal to him. When it was pointed out that this was not the style of previous popes, he supposedly replied "Our predecessors did not know how to be pope."
His time as pope was not going to be easy, however: a few years later, the Black Death came ashore. Next time we will take a look at how he responded to the crisis.