Merriam Webster's first definition of witness...
Merriam Webster's first definition of witness is "attestation of a fact or an event." It then goes on to give a second definition as "one that gives evidence." That is why we talk about witnesses at a court trial or someone serving as a witness on important documents or someone in the Witness Protection Program. This word was also used in describing John the Baptist (v. 7). In preaching the message of repentance and living a devout life, he gave attestation of the imminent arrival of the Messiah. As we prepare to celebrate Christ's arrival, how are we being witnesses for him?