宣誓 (xuān shì): คําสาบาน (ของสํานักงาน)

The new president swore an oath of office in front of the Capitol, promising to work hard for the country's prosperity and the people's well-being.

All newly hired civil servants must swear an oath of allegiance to the constitution, guaranteeing to perform their duties impartially and honestly.

In court, the witness swore an oath to tell the truth, and then described in detail what he saw on the night of the incident.