witness

someone who sees an event and reports what happened

a close observer; someone who looks at something (such as an exhibition of some kind); "the spectators applauded the performance"; "television viewers"; "sky watchers discovered a new star"

testimony by word or deed to your religious faith

(law) a person who attests to the genuineness of a document or signature by adding their own signature

(law) a person who testifies under oath in a court of law

be a witness to; "She witnessed the accident and had to testify in court"

perceive or be contemporaneous with; "We found Republicans winning the offices"; "You'll see a lot of cheating in this school"; "The 1960's saw the rebellion of the younger generation against established traditions"; "I want to see results"