(Agence France-Presse) Pope Francis called Wednesday for categoric opposition to capital punishment to be written into an update of the most important guide to Catholic teaching.

His comments, which will be controversial with many fundamentalist Christians and some Catholics, came in a speech to clerics attending a conference in Rome to mark the 25th anniversary of the publication of the Catechism of the Catholic Church.

The catechism is a question and answer guide to what Catholics should think about a wide range of moral and social issues.

Acknowledging that the Vatican itself had historically had “recourse to the extreme and inhuman remedy” of judicial execution, Francis said past doctrinal errors should be put aside.

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