The Catholic Church has historically been one of the most powerful institutions in Australia, influencing both sides of politics.

But now the Church is in steep decline with dwindling congregations and fewer and fewer donations. 

In response to its current crisis, a once-in-a-century meeting is being organised to discuss the future of Catholicism in Australia.

This plenary is pitting church reformists against conservatives, with Cardinal George Pell making a surprise return to the country to try and influence the debate.

Today, national correspondent for The Saturday Paper Mike Seccombe on the influence the Catholic Church has on Australia, and the battle for its future.

Guest: National correspondent for The Saturday Paper, Mike Seccombe.

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