Boris and Sofia Gurman were the first of 15 people to be killed when two men opened fire on Hanukkah celebrations at Bondi Beach.
Dashcam footage from Sunday night showed Mr Gurman wrestling a weapon away from Sajid Akram before the gunman's son emerged with his own firearm.
The couple's coffins rested side by side at the Sydney Chevra Kadisha funeral home on Friday.
Though their son believed his parents were far from Judaism, Rabbi Yehoram Ulman told the funeral they were "closer than all of us".
"Boris and Sofia were taken from us, not just because they were Jewish, but fighting to be Jewish," he said.
"A place in heaven is reserved for those that are called Kedoshim - holy martyrs - above even those that are called Tzadikkim - righteous people."
Married for 34 years, the long-time Bondi locals were remembered as people of deep kindness, quiet strength and unwavering care for others.
Retired mechanic Boris, 69, took enormous pride in his cornucopia of a garden.
Lemons and chillies were always harvested and shared with the family, as bunches of bananas grew 50 at a time.
Australia Post worker Sofia, 61, was a family leader who showed her love through food.
Her traditional Soviet wafer cake became something of a legend.
But her sense of order and occasions was so strong, the family couldn't have it whenever they wanted, they had to wait a full year before the next cake.
The pair met in the USSR before moving to Sydney to start a new life in Bondi.
"They were often genuinely perplexed when people spoke about travelling overseas, wondering why you'd ever leave when paradise was right at your front door," the rabbi said.
The couple were among four members of the public known to have fought the two Bondi gunmen.
Ahmed Al Ahmed was the only one to survive after wrestling a weapon from the older gunman.
The Gurmans and 62-year-old Reuven Morrison, who threw a brick at one of the shooters, paid for their courage with their lives.
Rabbi Ulman has led a number of funerals for shooting victims, including a service for primary school student Matilda and fellow Rabbi Eli Schlanger.
"Every single member of our community feels the pain of each other," he said.
"Yesterday we buried a 10-year-old girl and today .... it's been years since I've seen two coffins next to each other."
NSW Premier Chris Minns and Israel's ambassador to Australia Amir Maimon attended the funeral on Friday.
The Gurmans are among five victims due to be buried on Friday.
Six of the victims were laid to rest on Wednesday and Thursday.
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