Philip III of France entrusted to Gile the education of his son and heir, who later, in 1285, ascended the throne as Philip IV. When the new king entered Paris after his consecration at Reims, Giles gave the welcoming address in the name of the university, insisting on justice as the most important virtue for a king to practice. In 1285 Giles' work was again called into question, but by 1287 he was allowed to continue teaching. Eight years later in 1295 Giles was appointed as the Archbishop of Bourges, which he wrote about in his work "De renunciatione".