By Nick Martin, North of England Correspondent, in Eccles
News of the murder of Alan Henning has shocked those who live in his home town of Eccles in Greater Manchester.
The 47-year-old worked as a taxi driver here before deciding to join an aid convoy to Syria last Christmas.
Vigils had been held for Mr Henning in churches, mosques and community centres over the past two weeks.
The Rt Rev David Walker, Bishop of Manchester, said the "brutality" of the Islamic State would unite the community.
"In his life Alan Henning united people across the boundaries of nationality and faith.
"He did so both through his humanitarian actions and by the love that drove him on.
"That his tragic death continues to unite people across Britain and beyond is demonstrated today by the range of people and organisations paying him tribute.
"To ISIS we say 'You no longer have the power to shock us, now you just sicken us.
"Your brutality, against any who don't share your narrow, perverted world view, doesn't undermine our determination, it stiffens our resolve.
"Your destiny is not to be a force in human history, merely one of its sad footnotes'."
Orlando Napolitano, 68, who runs a cafe in Salford, where Mr Henning was a regular has spoken of his shock at his friend's murder.
"He was just a nice guy. I will never forget him," he told Sky News.
Local Pastor Bill Green, from the Gateway Community Church, had led some of the vigils.
He told Sky News: "Eccles is waking up to horrific news. People will be devastated. It's a close-knit community especially where Alan and his family live and I'd like to send my sympathies to Barbara and family at this time.
"The people of this town never lost hope we always thought there was a chance that he might come back and we came together and prayed that would happen. It hasn't happened."
Yellow ribbons adorned lamposts and railings across the town in a symbol of hope for Mr Henning.
Just days ago his wife Barbara made an emotional plea to the Islamic State for her husband's safe return.
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Gallery: Profile: Alan Henning
Alan Henning, 47, was born in Salford, Greater Manchester. Friends gave him the nickname "gadget" due to his love of technology
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He was married for 23 years and he had a teenage son and daughter
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He worked as a self-employed taxi driver
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Mr Henning saw the plight of Syrian people and volunteered with a Muslim charity. He had been to the region at least three times
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He drove life-saving medical equipment from the UK to Syria in old ambulances. He left in December 2013 to make the 4,000-mile trip
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He was kidnapped by IS in Syria by masked men. He may have been held in Ad Dana near Aleppo, then Raqqa