They are inviting passers-by, tourists and worshippers to drop into the city's Anglican cathedral for its spirituality fair, which will host prayer stations, workshops and meditations on April 17.
Organisers say they hope the 'Be Still' fair will inspire people to worship God in new ways and help those who rarely experience Christian spirituality.
Also on offer will be prayer stations, poetry as a spiritual aid, the role of the senses in Christian spirituality, what the Bible has to say and a prayer tent. There will be a traditional labyrinth laid out in the centre of the building – a medieval maze that encourages contemplation. Workshops through the day include prayer and movement, weaving and sculpture.
The fair is also offering 'speed spiritual direction'. It works on a similar principle to speed dating, giving visitors to the fair half an hour with a spiritual director to discuss spiritual issues. There will also be the chance for the sick to receive prayers of healing from the diocesan healing team.
A chapel will be set aside for people to pray for others or world issues, using a peace globe, candles, a map, prayer cards and a prayer tree.
The day is the inspiration of Stefan and Susie Smart, from New Community Church in Southampton, who have both been on the year-long spirituality course led by diocesan spirituality adviser Canon Peter Lippiett – and then mentored and taught others on subsequent courses. They've run 'Be Still' days for 12 years and Stefan Smart has written a book on the subject.
He said the day was aimed particularly at those who don't go to church but might be spiritually active, and churchgoers who've never tried prayer or certain activities.
"It will be a friendly atmosphere, low-key, and not too structured. People can go around the cathedral and try different things at their own pace," he said.
"A lot of people are hungry for spiritual reality. The challenge for us as Christians is to help them connect with God in a way that relates to them personally.
"The speed spiritual direction is often one of the highlights – people are touched and moved to have the chance to talk about their prayer life. Many Christians don't get that.
"But we're all spiritually inclined and to talk about one's inner journey is a valuable, even a sacred experience."
Susie Smart said: "Christians who come can be refreshed and given new ideas for prayer in the future. They can also feel confident bringing their non-Christian friends. People can come for an hour or two, or use the whole day as a retreat.
"Refreshments will be available, and there will be workshops, events and services throughout the day as well as ongoing prayer and art installations for individual use."
Joining the Smarts to organise the day are Paul and Gill Leppitt from City Life Church, as well as the diocesan spirituality team and healing team. More than 50 people will be manning prayer stations, running workshops or offering prayer on the day – from across all denominations.
Diocesan spirituality adviser Peter Lippiett said: "One of the features of the day is the ecumenical co-operation involved. This day will bring together people and prayer techniques from across the centuries of Christian spirituality and across the entire spectrum of the Christian Church."