Pope Benedict XVI predicted that gender ideology would be the next great challenge to the Church and the final rebellion against God, a US moral theologian has revealed.

Dr John Haas, a former member of the Pontifical Academy for Life, said the late pope made the “unsolicited” observation during a private conversation at the Vatican in 2014, the year after Benedict relinquished his petrine office.

He said the Pope Emeritus told him that “the next great challenge the Church is going to face is gender ideology, and it will be the ultimate rebellion against God the Creator”.