'Become A Witness' in the Bible

Thou shalt not utter a false report. Do not lay thy hand with a lawless man, to become a witness helping forward violence and wrong.

Thou hast shrivelled me up! it is become a witness; and my leanness riseth up against me, it beareth witness to my face.

"This I have seen, and I have become a witness that He is the Son of God."

beginning from the baptism of John, unto the day that he was received up from us, of these must one become a witness with us of his resurrection.