WASHINGTON - Joe Biden and Kamala Harris took their oaths of office on Wednesday using Bibles that are laden with personal meaning, writing new chapters in a long-running American tradition — and one that appears nowhere in the law.The Constitution does not require the use of a specific text for swearing-in ceremonies and specifies only the wording of the president’s oath.
That wording does not include the phrase "so help me God," but every modern president has appended it to their oaths and most have chosen symbolically significant Bibles for their inaugurations.That includes Biden, who used the same family Bible he has used twice when swearing in as vice president and seven times as senator from Delaware.Joe Biden is sworn in as U.S..