Philippine President Rodrigo Duterte on Friday promised to resign if someone can prove to him that God exists.

Duterte made the comment during a speech at a science and technology event, during which he questioned several aspects of Catholicism, The Associated Press reported.

He said that he would step down if someone can prove, with a picture or other evidence, that humans are “able to talk and to see God.”

Duterte has faced criticism from the majority-Roman Catholic population for his comments about religion. Most recently, he was under fire for calling God “stupid.”

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“Who is this stupid God? This son of a bitch is then really stupid,” he said in a speech last week. “You were not involved but now you’re stained with an original sin ... What kind of a religion is that? That’s what I can’t accept, very stupid proposition.”

That comment prompted one bishop to refer to Duterte as a “psychopath,” according to the AP.

The 73-year-old Duterte, who claims to have once been sexually abused by a Jesuit priest, is expected to meet with the leader of an association of Catholic bishops next week.

Duterte has faced international criticism and been accused of human rights abuses amid his crackdown on drugs in the country. President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE met with Duterte in November, and touted his “great relationship” with the leader.