Israeli Prime Minister Benjamin Netanyahu was released from the hospital on Monday after an emergency heart procedure, facing an unprecedented national crisis ahead of parliament’s vote on the first major piece of legislation to remake the country’s justice system.

Demonstrators, many of whom feel the very foundations of their country are being eroded by the government’s plan, stepped up their opposition, blocking a road leading up to parliament. Businesses across the country shuttered their doors in protest of the vote.

Driven by a governing coalition made up of ultranationalist and ultra-religious parties, the judicial overhaul has divided Israel, testing the delicate social ties that bind the country, rattling the cohesion of its powerful military and repeatedly drawing concern from even its closest ally, the United States.

Efforts to find a last-ditch compromise were underway, with Israel’s President Isaac Herzog shuttling between the sides, including a meeting at the hospital where Netanyahu was treated, to bring the sides to an agreement over the way forward. But it was unclear whether those would result in a compromise.

Early Monday, protesters blocked a road leading to the Knesset, and police used water cannons to push them back. Israeli media reported that a consortium of businesses announced late Sunday that some of their members wouldn’t open on Monday in protest at the government’s plans, leading to big mall chains and some gas stations sealing their doors.

The dramatic events were being watched closely in Washington, where the Biden administration has frequently spoken out against Netanyahu’s government and its overhaul plan. In a statement to the news site Axios late Sunday, Biden warned against pushing ahead with the legal changes that were sparking so much division.

“Given the range of threats and challenges confronting Israel right now, it doesn’t make sense for Israeli leaders to rush this — the focus should be on pulling people together and finding consensus,” he told the site.

Netanyahu’s sudden hospitalization for the implant of a pacemaker added another dizzying twist to an already dramatic series of events that have bitterly divided his country and are certain to shape Israel’s future.

Netanyahu’s doctors said Sunday the procedure had gone smoothly. In a short video statement from the hospital late Sunday, Netanyahu, 73, said he felt fine and thanked his doctors for his treatment and the public for wishing him well.

Wearing a white dress shirt and dark blazer, Netanyahu said he was pursuing a compromise with his opponents while also preparing for a vote on Monday that would enshrine a key piece of the legislation into law.

“I want you to know that tomorrow morning I’m joining my colleagues at the Knesset,” he said.

The overhaul calls for sweeping changes aimed at curbing the powers of the judiciary, from limiting the Supreme Court’s ability to challenge parliamentary decisions to change the way judges are selected.

Netanyahu and his far-right allies, a collection of ultranationalist and ultra-Orthodox parties, say the changes are needed to curb the powers of unelected judges. Their opponents, coming largely from Israel’s professional middle class, say the plan will destroy the country’s fragile system of checks and balances and push Israel toward authoritarian rule.

The plan has triggered seven months of mass protests, drawn harsh criticism from business and medical leaders, and a fast-rising number of military reservists in key units have said they will stop reporting for duty if the plan passes, raising concern that Israel’s security could be threatened.

President Herzog, who returned Sunday from a trip to the White House, immediately rushed to Netanyahu’s hospital room.

“This is a time of emergency,” Herzog said. “We have to reach an agreement.”

Herzog held meetings later Sunday with Israel’s opposition leader, Yair Lapid, and Benny Gantz, head of National Unity, another opposition party.

As they spoke, tens of thousands of people were gathering for mass rallies for and against the plan. Netanyahu’s supporters thronged central Tel Aviv — normally the setting for anti-government protests — while his opponents marched on Israel’s Knesset or parliament.

Many of the protesters in Jerusalem had camped out in a nearby park, after completing a four-day march into the city from Tel Aviv on Saturday.

Despite the attempts to project business as usual, Netanyahu’s schedule was disrupted by his hospitalization. His weekly Cabinet meeting scheduled for Sunday morning was postponed. Two upcoming overseas trips, to Cyprus and Turkey, were being rescheduled, his office said.

In Monday’s vote, legislators are to decide on an overhaul measure that would prevent judges from striking down government decisions on the basis that they are “unreasonable.”

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Proponents say the current “reasonability” standard gives judges excessive powers over decision-making by elected officials. Critics say removing it would allow the government to pass arbitrary decisions, make improper appointments or firings and open the door to corruption.

Protesters, who come from a wide swath of Israeli society, see the overhaul as a power grab fueled by personal and political grievances of Netanyahu — who is on trial for corruption charges — and his partners who want to deepen Israel’s control of the occupied West Bank and perpetuate controversial draft exemptions for ultra-Orthodox men.

Netanyahu was rushed to the hospital in the middle of the night a week after being hospitalized for what doctors said was dehydration.

The sudden hospitalization for the pacemaker procedure indicated that Netanyahu’s health issues were more serious than what he initially said.

Further ratcheting up the pressure on the Israeli leader, thousands of military reservists have been declaring their refusal to serve under a government taking steps that they see as setting the country on a path to dictatorship. Those moves have prompted fears that the military’s preparedness could be compromised.

Over 100 retired security chiefs publicly supported the growing ranks of military reservists who plan to stop reporting for duty if the overhaul is advanced.

“These are dangerous cracks,” military chief Lt. Gen. Herzi Halevi wrote in a letter to soldiers Sunday meant to address the tensions. “If we will not be a strong and cohesive military if the best do not serve in the IDF, we will no longer be able to exist as a country in the region.”

Netanyahu and his far-right allies announced the overhaul plan in January, days after taking office.

Netanyahu paused the overhaul in March after intense pressure from protesters and labour strikes that halted outgoing flights and shut down parts of the economy. After talks to find a compromise failed last month, he said his government was pressing on with the overhaul.