WASHINGTON — Joseph Robinette Biden Jr. was sworn in as the 46th president of the United States on Wednesday, taking office at a moment of profound economic, health and political crises with a promise to seek unity after a tumultuous four years that tore at the fabric of American society.
With his hand on a five-inch-thick Bible that has been in his family for 128 years, Mr. Biden recited the 35-word oath of office swearing to “preserve, protect and defend the Constitution” in a ceremony administered by Chief Justice John G. Roberts Jr., completing the process at 11:49 a.m., 11 minutes before the authority of the presidency formally changes hands.
The ritual transfer of power came shortly after Kamala Devi Harris was sworn in as vice president by Justice Sonia Sotomayor, her hand on a Bible that once belonged to Thurgood Marshall, the civil rights icon and Supreme Court justice. Ms. Harris’s ascension made her the highest-ranking woman in the history of the United States and the first Black American and first person of South Asian descent to hold the nation’s second highest office.
In his Inaugural Address, Mr. Biden declared that “democracy has prevailed” after a test of the system by a defeated president, Donald J. Trump, who sought to overturn the results of an election and then encouraged a mob that stormed the Capitol two weeks ago to block the final count. But he called for Americans to put aside their deep and dark divisions to come together to confront the coronavirus pandemic, economic troubles and the scourge of racism.