Influential religious leaders have urged the prime minister to halt sweeping hate speech reforms, warning the laws could have unintended consequences.
In a co-signed statement issued on Friday, Muslim and Christian leaders said attempted crackdowns on anti-Semitic Islamist hate preachers could threaten reasonable religious discourse unless reworked.
"A rushed legislative process of this nature undermines confidence, increases the risk of unintended consequences," the letter addressed to Anthony Albanese and senior ministers said.
Among the 27 leaders who signed the letter are Catholic Archbishop of Sydney Anthony Fisher, Anglican Archbishop Kanishka Raffel and Australian National Imams Council president Shadi Alsuleiman.
The group said it stands ready to work with Labor to "improve" the bill by removing an exemption for religious leaders citing a religious text.
"The provisions allow past lawful speech or expression to be deemed as hate crimes, which may expose individuals or institutions to consequences based on past lawful speech or expression," it said.
Labor has made a last ditch bid for bipartisan support for the hate speech and gun reform bill after failing to win backing from the coalition or the Greens.
Foreign Minister Penny Wong used Sussan Ley's own words to hit back at her after the opposition leader dubbed the bill "unsalvageable".
"The prime minister has made clear: we are open to amendments, we would like to see national unity, we would like to see the coalition and the Greens act responsibly," Senator Wong said in Adelaide.
"What is becoming increasingly clear is that it is Ms Ley's leadership which is unsalvageable."
Ms Ley targeted Senator Wong in the days following the Bondi terror attack, claiming the foreign minister hadn't "shed a single tear" after the December 14 massacre that claimed 15 lives at a Hanukkah festival.
The opposition had for weeks demanded Labor recall parliament before Christmas to adopt a report by Australia's envoy to combat anti-Semitism, Jillian Segal, which included proposed anti-vilification laws.
The prime minister on Friday challenged the opposition to suggest changes to the hate speech legislation.
"At the moment this is like trying to grab smoke, trying to get an arrangement with the coalition," Mr Albanese said.
Passing the bill next week appears unlikely as the Greens have also ruled out support unless it is expanded to protect other marginalised communities.
"Our strong view is that legislation that's dealing with hate and vilification and anti-discrimination can't single out just one religion and simply protect that," Senator David Shoebridge told Sky News.
The support of either party is required to pass the legislation through the Senate.
A group of independent MPs, including Allegra Spender whose electorate includes Bondi Beach, urged parliament to "negotiate in good faith" across party lines to pass the laws.
Legal experts and Jewish groups have also criticised the bill claiming it is too rushed and broad, although the Executive Council of Australian Jewry has called on the coalition to vote in favour of the legislation.
The bill includes measures such as cracking down on hate preachers, introducing hate speech and racial vilification offences, in addition to creating a national gun buyback scheme.
The Nationals have indicated their opposition to gun reform on behalf of farmers.
