To put under oath.
To affirm to be correct, true, or genuine.
To certify in an official capacity.
To supply or be evidence of.
To certify by signature or oath.
To make a vow regarding (something).
To declare publicly that one has made a vow, usually to show one's determination or to announce an act of retaliation.
To make a vow; to promise.
A solemn promise to perform some act, or behave in a specified manner, especially a promise to live and act in accordance with the rules of a religious order.
A declaration or assertion.