swear an oath in English
take a vow, swear a testament
Use "swear an oath" in a sentence
1. Barons had to swear an oath of allegiance to the king.
2. Servicemen have to swear an oath of loyalty to their country.
3. When the Acadians refused to swear an oath of allegiance to the king of England, the colony’s British governor ordered the Acadian people deported.…
4. Anyone wishing to become a bodyguard (Antrustion) of a Merovingian King had to present himself fully armed to the King and with his hands in the King's hand had to swear an oath of allegiance to the King
5. *Abjure* Abjure the realm swear an oath to leave the country for ever.Oath of Abjuration an oath disclaiming allegiance to James Francis Edward Stuart (1688–1766, known as the Old Pretender [1]), son of James II, or his descendants as claimants to the British throne.