'Witnesses' in the Bible

and if he may not hear, take with thee yet one or two, that by the mouth of two witnesses or three every word may stand.

and they did not find; and many false witnesses having come near, they did not find; and at last two false witnesses having come near,

Then the chief priest rent his garments, saying, -- 'He hath spoken evil; what need have we yet of witnesses? lo, now ye heard his evil speaking;