Related Clues:

• Formal declaration
• Curse or vow
• Witnesses take one
• Assure
• It may be solemn
• Swearing-in promise
• Hippocratic thing
• Inauguration Day event
• Indication of future success
• Sacred oath
• Court statement
• Quadrennial White House administration
• Binding declaration
• Office entry requirement, perhaps
• Word of honor