Concert co-ordinator Bruce Norman said invitations would be extended to all churches in Rotorua and beyond, but they also hoped for support from the wider Rotorua community.
Mr Norman is the music co-ordinator for Gabriel's Presence, a music group from St Mary's Church.
They have played at St John's church as part of their Sunday services once a year over the past three years.
He said people would be encouraged to donate whatever they could afford, but those who made a donation over $20 would receive a CD by Acclaim or Gabriel's Presence, while stocks lasted.
Mr Norman said he hoped for a crowd of at least 600 people.
He said St John's offered a number of services such as foodbanks and programmes.
"I think it's an opportunity for the community, not just the church community but the wider community, to show some appreciation for what they [St John's] have offered."
He said he encouraged as many people as possible to come along and show their support.
"I think for anyone to lose so much at one time is devastating to that community, and I think there's a lot of generosity in Rotorua."
Mr Norman said it was also an opportunity for the community to listen to some of the wealth of entertainment Rotorua had - "there's some pretty amazing talent".
Sunrise Rockers guitarist and singer Richard Anaru said the fire had been a tragedy for St John's.
He said Mr Norman had worked hard on putting this project together and hopefully it could help the church to move forward.
Ian Edward, one of the Edward Brothers, said they were thrilled to have been asked to take part.
"As long-time Rotorua citizens this is an important function to be part of and we were pleased to help," he said.
"There was a lot of history that was lost in that fire but the spirit of goodwill remains and we want to be part of that."
The Rotorua Energy Charitable Trust has helped to cover some of the expenses involved along with sponsorship from businesses providing equipment and promotional media.
