More than 44,000 people have been killed and more than 104,000 injured in Gaza since then, according to the territory's Hamas-run health ministry.
"Over the coming days, the United States will make another push with Turkey, Egypt, Qatar, Israel, and others to achieve a ceasefire in Gaza with the hostages released and an end to the war without Hamas in power," Biden said on X.
US national security adviser Jake Sullivan said Biden had agreed with Israeli Prime Minister Benjamin Netanyahu right before the announcement of the Lebanon ceasefire to try again for a Gaza agreement, which negotiators have sought unsuccessfully for months.
The US and its Arab allies used to say that a ceasefire in Gaza would end the conflict with Hezbollah. Now they are hoping for the reverse.
The argument goes that the truce in Lebanon shows compromises are possible and that Hamas may now feel more isolated, putting pressure on it to agree to concessions.
However, the goals of the Israeli government in Lebanon were always more limited than those in Gaza, where it has failed to agree a post-war plan.
Qatar recently suspended its efforts to help mediate a ceasefire and hostage release deal in the Palestinian territory until both sides shifted their positions. Hamas insists on ending the war and a full withdrawal of Israeli forces, while Israel remains determined to destroy Hamas.
Netanyahu's political survival is also bound up with Gaza. His far-right coalition partners aspire to rebuild Jewish settlements there and have threatened to collapse the government if Israel makes a “reckless” agreement to stop the fighting.
Netanyahu also worries that a ceasefire could open the way to a commission of inquiry into Israel’s failure to prevent the 7 October attacks, which would be very damaging for him.