The prayer, which will primarily focus on those affected by the economic crisis, will also be a reminder of the church’s commitment to traditional family values.
The French government has said it plans to legalize both marriage and adoption for same-sex couples.
Bishop Bernard Podvin, speaking to radio station France Inter on the subject, said: “To say that the Catholic Church is against homosexual marriage not the scoop of the century.
“But if it’s not a scoop, there must be debate. And yet there isn’t any.”
The prayer will also touch on themes such as euthanasia, and will refer to the political and economic leaders of France.