Henry’s support for the moral reform begun from the Abbey of Cluny was significant. Cluny’s abbot, St Odilo, was also one of Henry’s counsellors. The Cluniac Reforms affected not only monastic life, but the whole life of the Church. He helped the Church combat simony (the buying and selling of ecclesiastical goods and offices), and promoted clerical celibacy. In 1022, together with Pope Benedict VIII, Henry presided over the Council of Pavia, which published 7 canons against clerical concubinage, and in favour of the defence of the patrimony of the Church. He restored episcopal sees, and founded the Diocese of Bamburg. His interest in the liturgy can be seen in his desire to introduce recitation of the Creed to the Sunday Mass.
Henry was also a decisive political leader. The early part of his reign required him to defend his claim to the throne against various rebellious lords. He allied himself with pagan Slavic tribes against the Polish Duke Boleslaw, a decision for which he was criticized. In Italy he defeated Arduin of Ivrea, who had been elected King of Italy (although the title was not recognized universally). Henry also came into conflict with the Byzantine empire.
One of the most striking aspects of Henry’s life was his love for his wife, St Cunigunde. The couple did not have children, which has given rise to the belief that the spouses had taken a mutual vow of chastity, although some historians dispute this. In any case, contrary to a common medieval practice, Saint Henry did not repudiate his wife; his decision to remain with her contributed in no small part to his reputation for sanctity. His fidelity bore witness to his deep love for his wife, and his profound respect for the Sacrament of Marriage.
Henry II was canonized by Pope Eugene III in 1146.