Biden says "I have given my heart and my soul to our nation" ahead of farewell address

President Biden is delivering his farewell address to the nation at 8 p.m. Wednesday, five days before he passes the mantle of the presidency to his predecessor and his successor, President-elect Donald Trump. 

It will be Mr. Biden's fifth and final formal address from the Oval Office. Six months ago, in his last primetime speech in the Oval Office, he explained his decision not to run for reelection. 

Wednesday night's speech will be a moment that wraps up not only Mr. Biden's time as president, but his time in elected office. Apart from the four years following his vice presidency, Mr. Biden has held elected office every year since 1973.