Community leaders from across faiths and cultures have urged Australians to respond with love and solidarity following the deadly Bondi terror attack on Sunday - rejecting fear and division.

At a healing vigil at Hyde Park in Sydney on Monday evening, crowds of people from the Jewish, Muslim, First Nations, and wider communities gathered to mourn the victims, support those affected, and stand against the rise of prejudice.

Speakers included Vanessa Turnbull-Roberts, Rabbi Jeffrey Kamins of Emanuel Synagogue; Bilal Rauf of the Australian National Imams Council; Aunty Lizzie Jarrett; Aunty Yvonne Weldon; Jewish community members Bart Shteinman and Ben Strum; Wiradjuri activist Ethan Lyons, and a performance by Jayden-Kitchener Waters.

Together, they called for solidarity and unity in the face of violence.

"I hold my hand on my heart because it's beating. But there are over 10 lives where they don't get to do that. There are over 10 lives that were taken by the harm of extremism," said Vanessa Turnbull-Roberts in the vigil's opening speech.

"We come together in peace, in reverence, in honouring what is going before us. We honour that. We call for communication. We call for our communities to come together."

Rabbi Jeffrey Kamins reflected on the outpouring of support and what it means for both the Jewish community and the nation.

"It's quite astounding to see all of you here in this moment, for the last 24 hours - for I think all Australians, people around the world, but especially members of the Jewish community - have been of trauma and tumult," he said.

"I want to acknowledge that I and so many in our Jewish community have received messages of love, of support and condolence from neighbours on our streets, from leaders in different faith communities, from Palestinian friends and friends around this country, and in so doing, I think we are now learning that we are all just flesh and blood, and we are all also the light."

He said the messages of support highlight the resilience and connection shared across communities, and spoke out against the extremist acts that threaten that solidarity.

"In that they also tried to kill something so vital to Australia, which is this ancient culture that celebrates life and humanity and connection to place, and I, looking at all of you, can say that attempt to extinguish the light shall not succeed."

On behalf of the Australian-Muslim community, Bilal Rauf expressed his condolences for the Jewish community, describing Sunday's attack as "utterly heartbreaking".

Reflecting on the rise of Islamophobia and the 2019 Christchurch mosque attacks, Mr Rauf said the Muslim community shares a commonality with their Jewish brothers and sisters.

"I think so many are still processing what we saw unfold, what is still unfolding. And for communities of faith, particularly the Muslim community, it's something which has reopened so much trauma," he said.

"We understand the pain and the grief of our Jewish brothers and sisters, and that's why we say loud and clearly, we stand with you side by side, ready to support you as you need...When there's an attack on the Jewish community, or any community, it's an attack on all of us."

He emphasised the importance of unifying against hate, especially in the fragile times following the attack.

"These perpetrators, they seek to divide. They seek to tear us apart as a country, as a society, as communities. But now, more than ever, is a time when we stand together in support, shoulder to shoulder, arms around each other, because that is when we project the strength that is within us as a society and a country."

Proud Gumbaynggirr, Bundjalung, and Dunghutti woman, Aunty Lizzie Jarrett, echoed this sentiment - reaffirming the vigil's message of love, healing, and unity.

"What we need right now is this unity - to come together, to not listen to propaganda, to not be swayed into hate and mass divide. That's not going to get us anywhere at all. It's actually going to let whatever happened yesterday win and perpetrate again," she said.

She also reaffirmed that Sunday's attack is not a reflection of any community, but individual actions of hate.

"Remember that those two perpetrators did it on their own. Do not let the label of community, religion and stigma thwart your minds that are very conscious and very clever, because that's how they win."

"We need to come together in love, strength, unity, and make sure every one of your friends, in your circles, every network, every organisation you work for, follow the same path," she said.

A second healing ceremony will be held at 5:30 PM, December 16, at Bondi Beach.