It would take for Israel to want their hostages back, instead of wanting to continue the genocide of Palestinians.

Hamas says there must be a permanent ceasefire deal in order for remaining hostages to be released - CNN - January 3rd 2024

Hamas recently issued an ultimatum to Israel that there must be a permanent ceasefire in order for the remaining hostages in Gaza to be released.
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Israel’s rejection of Hamas’ initial demand was expected

The following article describes the unwillingness of the Israeli government to prioritise its people, from their point of view.

‘Nothing is moving:’ Families’ anger grows in Israel as hostages mark 100 days in Hamas captivity _ CNN - Sun January 14, 2024

Weinberg, 27, who spoke to CNN in Tel Aviv’s so-called Hostage Square, where the families have gathered for weeks to protest, was angered by the killing of a top Hamas commander in Lebanon earlier this month - widely attributed to Israel. She said some of Israel’s “military action” is “directly endangering the hostages.”

The country’s leadership “must put the release of the hostages at the top of its priority list,” Weinberg said.
part of the problem was that the Israeli government has two aims: the destruction of Hamas and the return of the hostages.
“But there can’t be two aims because sometimes these aims clash - like the elimination of al-Arouri,” said Weinberg, referring to the drone strike that killed Hamas number two Saleh al-Arouri on January 2.