JERUSALEM — Israeli Prime Minister Benjamin Netanyahu was recovering in a hospital Sunday after an emergency heart procedure, as tens of thousands of supporters and opponents of his government’s judicial overhaul plan held rival rallies ahead of a key vote.

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. Monday’s vote in parliament is expected to approve the first major piece of legislation in the contentious plan.

Netanyahu’s doctors said Sunday the procedure had gone smoothly. By Sunday evening, Netanyahu remained in Sheba Hospital near Tel Aviv.

In a short video statement from the hospital, 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.

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 changing the way judges are selected.

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.