Campaigners hope that this will be the UK's biggest ever climate change demonstration.
They will be talking to MPs, as well as holding a service for all denominations and a multi-faith time of reflection. The day will end with a rally outside Parliament, to highlight the issue of climate change.
One Christian group involved is North East Call To Action; David Golding from the group told Premier: "Climate change is the greatest moral and humanitarian challenge facing humanity and it threatens all the things we love most.
"However, on 17th June, we have a great opportunity to help protect them, by meeting our newly elected MPs in Westminster to ask them to commit to strong action on climate change."
"Christian believers in general, and those in the North East in particular, have an enviable reputation for their support for action on global poverty.
"And our efforts have been blessed by God with, for example, massive debt cancellation and a reduction in child mortality of over 50% - amazing! Now is not the time to let ourselves down - still less to betray the world's poor and our own children and grandchildren - by a failure to rise to this great challenge."
"Christians are told by scripture to speak up for those who can't speak for themselves, and those who are suffering first and most from climate change are the poorest people in the poorest countries at the present time."
"We each need to reform our lifestyles, in terms of climate change I will have no readily avoidable part in it."
Listen to Premier's Ian Britton speak to David Golding here: