(an act, example, of) stating something firmly

declaration, positive statement

an official written or printed statement that may be used as proof or evidence

authorizing document

the act of confirming or being confirmed (all senses)

ratification, validation, proof

something that is declared

assertion of belief or knowledge

anything that gives a reason for believing, that makes clear or proves, something

proof

a formal promise or agreement that certain conditions agreed (e.g. when one buys something) will be fulfilled

pledge, promise

a guarantee

assurance

evidence, clue

evidence, clue

(an example of) evidence that is sufficient to show that something is a fact

evidence, authentication

a large sea-animal with short fur and wide flippers; a piece of wax, lead etc stamped with a design, attached to a document to show that it is genuine, or to a letter, packet, box, bottle, door etc to show that it has not been opened; something used to make an opening airtight or watertight

authentication; stamp

will; the two main division of the Bible

tribute; last wishes

a written statement describing a person's merits, abilities, qualifications etc; something given to a person to show appreciation of services

tribute

a formal statement especially in a law court, that something is true

declaration about truth; proof

proof

proof