President Joe Biden helped light the National Christmas Tree on Thursday while remembering those lost to the COVID-19 pandemic and crediting the American people for his optimism.

Biden also paid tribute to service members, thanking them for their sacrifices.

More Images
President Joe Biden and first lady Jill Biden prepare to light the National Christmas Tree on the Ellipse in Washington, Thursday, Dec. 2, 2021. (AP PhotoSusan Walsh)

President Joe Biden helped light the National Christmas Tree on Thursday while remembering those lost to the COVID-19 pandemic and crediting the American people for his optimism.

Billy Porter and LL COOL J perform as President Joe Biden and first lady Jill Biden attend the National Christmas Tree lighting ceremony at the Ellipse near the White House, Thursday, Dec. 2, 2021, in Washington. (AP PhotoAndrew Harnik)

It was Biden's first time participating in the nearly 100-year-old tradition in the nation's capital. Vice President Kamala Harris and her husband, Doug Emhoff, joined the Bidens.

Billy Porter performs as President Joe Biden and first lady Jill Biden attend the National Christmas Tree lighting ceremony at the Ellipse near the White House, Thursday, Dec. 2, 2021, in Washington. (AP PhotoAndrew Harnik)

The first National Christmas Tree lighting was held on Christmas Eve in 1923.

Patti LaBelle performs as President Joe Biden and first lady Jill Biden attend the National Christmas Tree lighting ceremony on the Ellipse in Washington, Thursday, Dec. 2, 2021. (AP PhotoSusan Walsh)

Patti LaBelle performs as President Joe Biden and first lady Jill Biden attend the National Christmas Tree lighting ceremony on the Ellipse in Washington, Thursday, Dec. 2, 2021. (AP PhotoSusan Walsh)

Chris Stapleton performs as President Joe Biden and first lady Jill Biden attend the National Christmas Tree lighting ceremony at the Ellipse near the White House, Thursday, Dec. 2, 2021, in Washington. (AP PhotoAndrew Harnik)

Chris Stapleton performs as President Joe Biden and first lady Jill Biden attend the National Christmas Tree lighting ceremony at the Ellipse near the White House, Thursday, Dec. 2, 2021, in Washington. (AP PhotoAndrew Harnik)

Kristin Chenoweth preforms during the National Christmas Tree lighting ceremony on the Ellipse in Washington, Thursday, Dec. 2, 2021, attended by President Joe Biden and first lady Jill Biden. (AP PhotoAndrew Harnik)

Kristin Chenoweth preforms during the National Christmas Tree lighting ceremony on the Ellipse in Washington, Thursday, Dec. 2, 2021, attended by President Joe Biden and first lady Jill Biden. (AP PhotoAndrew Harnik)

Vice President Kamala Harris and her husband Doug Emhoff attend the National Christmas Tree lighting ceremony at the Ellipse near the White House, Thursday, Dec. 2, 2021, in Washington. (AP PhotoAndrew Harnik)

Vice President Kamala Harris and her husband Doug Emhoff attend the National Christmas Tree lighting ceremony at the Ellipse near the White House, Thursday, Dec. 2, 2021, in Washington. (AP PhotoAndrew Harnik)

“We are a great nation because of you, the American people,” Biden said, joined on stage by his wife, first lady Jill Biden. “You've made me so optimistic.”

President Joe Biden and first lady Jill Biden prepare to light the National Christmas Tree on the Ellipse in Washington, Thursday, Dec. 2, 2021. (AP PhotoSusan Walsh)

President Joe Biden and first lady Jill Biden prepare to light the National Christmas Tree on the Ellipse in Washington, Thursday, Dec. 2, 2021. (AP PhotoSusan Walsh)

It was Biden's first time participating in the nearly 100-year-old tradition in the nation's capital. Vice President Kamala Harris and her husband, Doug Emhoff, joined the Bidens.

Singer-actor LL Cool J hosted the program, which featured performances by Billy Porter, Chris Stapleton, H.E.R., Kristin Chenoweth, Patti LaBelle and Howard University’s gospel choir.

The evergreen tree on the Ellipse, just south of the White House, was lit up in red and white lights. It is surrounded by smaller trees representing every U.S. state and territory and the District of Columbia. Students from across the country made the ornaments used to decorate the trees.

Billy Porter and LL COOL J perform as President Joe Biden and first lady Jill Biden attend the National Christmas Tree lighting ceremony at the Ellipse near the White House, Thursday, Dec. 2, 2021, in Washington. (AP PhotoAndrew Harnik)

Billy Porter and LL COOL J perform as President Joe Biden and first lady Jill Biden attend the National Christmas Tree lighting ceremony at the Ellipse near the White House, Thursday, Dec. 2, 2021, in Washington. (AP PhotoAndrew Harnik)

The first National Christmas Tree lighting was held on Christmas Eve in 1923.

Billy Porter performs as President Joe Biden and first lady Jill Biden attend the National Christmas Tree lighting ceremony at the Ellipse near the White House, Thursday, Dec. 2, 2021, in Washington. (AP PhotoAndrew Harnik)

Billy Porter performs as President Joe Biden and first lady Jill Biden attend the National Christmas Tree lighting ceremony at the Ellipse near the White House, Thursday, Dec. 2, 2021, in Washington. (AP PhotoAndrew Harnik)

Patti LaBelle performs as President Joe Biden and first lady Jill Biden attend the National Christmas Tree lighting ceremony on the Ellipse in Washington, Thursday, Dec. 2, 2021. (AP PhotoSusan Walsh)

Patti LaBelle performs as President Joe Biden and first lady Jill Biden attend the National Christmas Tree lighting ceremony on the Ellipse in Washington, Thursday, Dec. 2, 2021. (AP PhotoSusan Walsh)

Chris Stapleton performs as President Joe Biden and first lady Jill Biden attend the National Christmas Tree lighting ceremony at the Ellipse near the White House, Thursday, Dec. 2, 2021, in Washington. (AP PhotoAndrew Harnik)

Chris Stapleton performs as President Joe Biden and first lady Jill Biden attend the National Christmas Tree lighting ceremony at the Ellipse near the White House, Thursday, Dec. 2, 2021, in Washington. (AP PhotoAndrew Harnik)

Kristin Chenoweth preforms during the National Christmas Tree lighting ceremony on the Ellipse in Washington, Thursday, Dec. 2, 2021, attended by President Joe Biden and first lady Jill Biden. (AP PhotoAndrew Harnik)

Kristin Chenoweth preforms during the National Christmas Tree lighting ceremony on the Ellipse in Washington, Thursday, Dec. 2, 2021, attended by President Joe Biden and first lady Jill Biden. (AP PhotoAndrew Harnik)

Vice President Kamala Harris and her husband Doug Emhoff attend the National Christmas Tree lighting ceremony at the Ellipse near the White House, Thursday, Dec. 2, 2021, in Washington. (AP PhotoAndrew Harnik)

Vice President Kamala Harris and her husband Doug Emhoff attend the National Christmas Tree lighting ceremony at the Ellipse near the White House, Thursday, Dec. 2, 2021, in Washington. (AP PhotoAndrew Harnik)