'Bear Witness' in the Bible

The same came as a witness, to bear witness of the light, that all men through him might believe.

He was not that light: but to bear witness of the light.

"If I bear witness of myself, my witness is not true.

But I have greater witness than the witness of John. For the works which the father hath given me to finish: the same works that I do: bear witness of me, that the father sent me.

I am one that bear witness of myself, and the father that sent me beareth witness of me."

Jesus answered them, "I told you and ye believe not: The works that I do in my father's name, they bear witness of me:

And ye shall bear witness also, because ye have been with me from the beginning.

Jesus answered him, "If I have evil spoken, bear witness of the evil: if I have well spoken, why smitest thou me?"

Pilate said unto him, "Art thou a King then?" Jesus answered, "Thou sayest that I am a King. For this cause was I born, and for this cause came I into the world, that I should bear witness unto the truth. And all that are of the truth hear my voice."