Projects such as a food bank in Bangor and work with drug addicts on Anglesey were examples of ways in which the church was involving itself more widely in the community, the bishop said.
"The church has to redescribe what good news looks like - if it's only about Sunday attendance then we haven't understood what all this is all about," he said.
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CHURCH PUBLIC MEETINGS
* Tue, 8 November: St John's Church, Carmarthen, 18:30 GMT
* Wed, 9 Nov: Brecon Cathedral, 14:00 GMT
* Mon, 28 Nov: St Asaph Cathedral, 18:30 GMT
* Tue, 29 Nov: Bangor Cathedral, 14:30 GMT
* Tue, 10 January 2012: Llandaff, Cardiff (venue tbc), 19:30 GMT
* Wed, 11 January: Priory Centre, Abergavenny, 14:30 GMT
Mr John said he believed the church had an advantage over its counterpart in England in being "slightly removed" from government, and hoped that people would respond to its invitation to discuss the future.
"It's really important that the Church in Wales does engage and asks people 'what is your vision, what do you want the church to look like' as we approach this milestone in the life of the Church in Wales," he said.
"I'm hopeful that these discussions will set the agenda for the next ten, twenty years and beyond."
In February, the Church in Wales revealed that it needed £12m a year to repair its 1,000 listed churches.
But proposals to close church buildings have occasionally proved controversial.
Worshippers in the south Wales valleys staged a sit-in at All Saints Church in Maerdy in July to prevent its closure, eventually striking an agreement to buy the building for £1,000.
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