from G3144; to be a witness, i.e. testify (literally or figuratively):--charge, give (evidence), bear record, have (obtain, of) good (honest) report, be well reported of, testify, give (have) testimony, (be, bear, give, obtain) witness.
to be a witness, to bear witness, i.e. to affirm that one has seen or heard or experienced something, or that he knows it because taught by divine revelation or inspiration