Following this, the king took his constitutional oath, and was acclaimed by the assembled legislators and guests.

According to the Belgian constitution, the monarch accedes to the throne only upon taking a constitutional oath.

He took the constitutional oath of the clergy in 1791, joining the French army around that time.

Hadi took the constitutional oath of office as Yemen's president.

He resigned the administration of his archdiocese rather than take the constitutional oath.

They conclude that he did not fulfill his constitutional oath "to take care that the laws be faithfully executed."

Some of these are current justices, and some have not yet taken a constitutional oath.

The Chief Justice also administered the "constitutional" oath, which is required of all Federal employees.

Nevertheless, he maintains that his constitutional oath of office to uphold the law took precedence over the secrecy requirement.

However, during his second reign (1940-1947), Michael I reigned mostly as an unconstitutional king, without a constitutional oath or a parliamentary vote.