Britannica Sources used in this answer

Which problems in the medieval church did Gregory VII try to reform?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Gregory VII excommunicating Henry IV — St. Gregory VII Pope Gregory VII, after his expulsion from Rome, laying a ban of excommunication on the clergy “together with the raging king” (Henry IV of Germany), drawing from the 12th-century chronicle of Otto of Freising; in the library of the University of Jena, Germany.

Pope Gregory VII sought to restore the moral integrity and independence of the church by addressing several critical issues during his pontificate. His reform efforts, often referred to as the Gregorian Reform, focused primarily on three major areas:1

Simony: Gregory rigorously attacked the practice of simony—the buying or selling of ecclesiastical offices or spiritual gifts. He viewed this as a heresy and a corruption of the church's spiritual mission.12
Clerical Celibacy: The reform movement aimed to eliminate marriage and concubinage among the clergy, which were customary in many parts of the Western church. Gregory issued and enforced strict decrees requiring priests to remain celibate, often facing significant resistance from local clergy.13
Canonical Elections and Lay Investiture: Gregory insisted that bishops and abbots be chosen through canonical elections rather than being appointed by secular rulers. He prohibited lay investiture, the practice where secular lords bestowed symbols of spiritual office, as he believed it violated the church's independence and was often linked to simony.14

These reforms were underpinned by Gregory’s strong emphasis on papal primacy, asserting that the pope held supreme authority over both the ecclesiastical hierarchy and secular governments.3