belltowers three times a day, at 9 am, 12 pm and 3 pm to summon the Christian faithful to recite the Lord's Prayer; the injunction to pray the Lord's prayer thrice daily was given in Didache 8, 2 f., which, in turn, was influenced by the Jewish practice of praying thrice daily found in the Old Testament, specifically in , which suggests "evening and morning and at noon", and , in which the prophet Daniel prays thrice a day. The early Christians thus came to pray the Lord's Prayer at 9 am, 12 pm and 3 pm. Many Catholic Christian churches ring their bells thrice a day, at 6 am, 12 pm, and 6 pm to call the faithful to recite the Angelus, a prayer recited in honour of the Incarnation of God. Some Protestant Christian Churches ring church bells during the congregational recitation of the Lord's Prayer, after the sermon, in order to alert those who are unable to be present to "unite themselves in spirit with the congregation". In many historic Christian Churches, church bells are also rung on All Hallows' Eve, as well as during the processions of Candlemas and Palm Sunday; the only time of the Christian Year when church bells are not rung include Maundy Thursday through the Easter Vigil. The Christian tradition of the ringing of church bells from a belltower is analogous to the Islamic tradition of the adhan from a minaret. Call to worship Most Christian denominations ring church bells to call the faithful to worship, signalling the start of a mass or service of worship. In the United Kingdom predominantly in the Anglican church, there is a strong tradition of change ringing on full-circle tower bells for about half an hour before a service. This originated from the early 17th century when bell ringers found that swinging a bell through a large arc gave more control over the time between successive strikes of the clapper. This culminated in ringing bells through a full circle, which let ringers easily produce different striking sequences; known as changes. Exorcism of demons In Christianity, the ringing of church bells is traditionally believed to drive out demons and other unclean spirits. Inscriptions on church bells relating to this purpose of church bells, as well as the purpose of serving as a call to prayer and worship, were customary, for example "the sound of this bell vanquishes