As pope, Honorius I looked up to Gregory I and employed monks rather than secular clergy as staff at the Lateran Palace. He initially supported Adaloald, the deposed Catholic king of the Lombards, but established cordial relations with Adoald's Arian rival Arioald. He did not succeed in resolving the schism of Venetia-Istria, but took steps to appease the archbishops of Ravenna, who were dissatisfied with their subordination to Rome. Honorius actively supported the difficult Christianisation of Anglo-Saxon England and sent Birinus to convert the West Saxons, but less successful in convincing the Celts to abandon their system of computing the date of Easter. At the Sixth Council of Toledo, Honorius urged the Visigothic bishops to continue baptizing Jews, a policy instituted by Gregory I. Honorius became involved in early discussions regarding the doctrine of Monothelitism, which is the teaching that Christ has only one energy and one will, in contrast with the teaching that He has two energies and two wills, both human and divine. Patriarch Sergius I of Constantinople wrote an initial letter informing Honorius of the Monothelite controversy, asking Honorius to endorse a position that Church unity should not be endangered by having any discussions or disputes over Christ’s possessing one energy or two. Sergius added that the doctrine of two energies could lead to the erroneous belief that Jesus has two conflicting wills. Pope Honorius’ reply in 635 endorsed this view that all discussions should cease, and agreed that Jesus does not have two conflicting wills, but one will, since Jesus did not assume the vitiated human nature tainted by Adam's fall, but human nature as it existed prior to Adam's fall. Honorius was apparently aware of the rise of Islam and viewed this religion's tenets as closely resembling those of Arius.
Legacy
in 680, Honorius was anathematized by the Third Council of Constantinople along with the Monothelites, for "having followed them in all things". Citing his correspondence with Sergius, the Council accused Honoris of having "confirmed his impious doctrines". Pope Leo II's letter of confirmation of the Council altered the Council's condemnation so as to criticize Honorius not for teaching or committing heresy, but for "imprudent economy of silence". Leo's letter states that Honorius is anathematized because "he did not attempt to sanctify this Apostolic Church with the teaching of Apostolic tradition, but by profane treachery permitted its purity to be polluted." The anathema was later one of the main arguments against papal infallibility in the discussions surrounding the First Vatican Council of 1870. The episode was not ultimately regarded as contrary to the proposed dogma because Honorius was not considered by the supporters of infallibility to be speaking ex cathedra in his letters to Sergius.