Christians Against Poverty, in partnership with 529 separate church congregations across the UK, has revealed the scale of the help being given to people with poor mental health.
A quarter of all those calling the charity with debt problems describe themselves as being mentally ill and of those, more than half (58%) were feeling suicidal about their financial situation.
"The stats say it all, really," said Chief Executive Matt Barlow as the organisation marked Mental Health Awareness Week.
"A few days ago MPs were kind enough to be talking in Parliament about the faith community's contribution to society and that is definitely our perspective.
"It's no exaggeration to say that thanks to the love of the Church, people's lives are being saved every day, especially among the poorest and most socially marginalised. Their need is huge and the local Church perfectly positioned to help."
Figures show a quarter of people in the poorest fifth of the British population are at "high risk" of mental illness, compared with just ten per cent of the most affluent.
People with mental health problems are also more likely to experience poverty, since mental illness has adverse effects on the ability to earn.
Tanya was helped by Christians Against Poverty when she was struggling with debt, and said the charity is also helping her through her mental health problems.
She told Premier's News Hour: "It was very non-judgmental... and they just used to say a prayer for me which used to make me feel comforted.
"It's just really enveloping you in kindness and helpfulness.
"I just couldn't manage on my own and I just felt the weight of this came off my shoulders."
Listen to Premier's Antony Bushfield speaking to Tanya on the News Hour:
