“Consider the significance of the number twenty-four in ancient Israel and in the Book of Mormon. Certain numbers were clearly meaningful in antiquity: seven was the number of spiritual perfection (as in the seven seals in the book of Revelation); twelve was a governmental number (as with the twelve tribes, twelve apostles). The number twenty-four, being a multiple of twelve, was associated with heavenly government, especially priestly judgment and temple service … .
“The text of the governmental oath of the Nephite chief judge to ‘judge righteously’ happens to be reported only in the account of the twenty-fourth year of the reign of Judges (Alma 50:39–40)” (Welch, “Number 24,” 272–74).