Prime Minister Scott Morrison will enact "preventative regulation and legislation" to shield freedom of religion from future enemies, giving his strongest hints to date about the government's intentions regarding "religious freedom" laws.

In a television interview with Sky News on Monday night, Mr Morrison indicated he was displeased with the "trajectory" of freedom of speech and freedom of religion over the past decade.

Eyeing "preventative" law reform: Prime Minister Scott Morrison. Credit:Alex Ellinghausen

Asked to identify specific areas that needed protection, the PM said the Christian school to which he sent his children should be able to hire and fire staff as it pleased, and deliver education in line with his expectations as a Christian parent. Schools can already do so under current laws.

He also said Australians should be free to take up positions on the boards of public companies — or as partners in a law firm — regardless of whether their religious beliefs conflicted with the policies of that company.