The bishops come from all six continents and were brought together by the Archbishop of Cape Town and Primate of Southern Africa.
Most Revd Dr Thabo Makgoba said: "We accept the evidence of science: Human activity, especially in fossil-fuel based economies, is the main cause of the climate crisis. We heard of extreme weather and changes to seasons; rising sea levels; acidification of seawater; depleted fishing grounds; and displaced people who are climate refugees.
"The problem is spiritual as well as economic, scientific and political. We have been complicit in a theology of domination. While God committed the care of creation to us, we have been care-less - but not hopeless.
"In the words of St Theresa of Avila, we are God's hands and feet on earth - now is the time for us, rooted in prayer, to step up and take action on the climate crisis."
The Bishop of Salisbury, the Rt Revd Nicholas Holtam, who was the Church of England's representative on the group, has welcomed the declaration.
"We accept the scientific evidence that human activity is more than 95% likely to be the main cause of global warming. This century began with fourteen of the fifteen hottest years ever.
"That our Declaration is issued in Holy Week and addressed to the Church on Good Friday is a mark of the seriousness with which we view the crisis of climate change.
"Climate change is the greatest moral issue facing the world, especially considering the poor are the most vulnerable to the impact of climate change.
"Our call to action is aimed at Dioceses and Provinces across the world-wide Anglican Communion. We are also clear that delivering real change demands forming deep alliances with other churches, other faith groups, and all who care for the Earth."
The Declaration commits the bishops to energy conservation measures in church buildings, more renewable energy, supporting sustainability in water, food, agriculture and land use reviewing churches' investment practices including a call for divestment and closer ecumenical and interfaith co-operation.
The Rt Revd Ellinah Wamukoya, Bishop of Swaziland and Africa's first woman Bishop said: "Women are more often dependent on natural resources for their livelihoods, so the contribution of women is essential in decisions around climate change. Our communities must be equal, as in the Eucharist."
Listen to the Bishop of Salisbury speaking to Premier's Aaron James:
