'Bear Witness' in the Bible

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

He was not the light, but came to bear witness of the light.

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

But the testimony which I have, is greater than that of John; for the works which the Father hath given me to perform, the works themselves which I do, bear witness of me, that the Father hath sent me.

Jesus answered and said to them, Though I bear witness of myself, my witness is true; for I know whence I came, and whither I go; ye know not whence I come, or whither I go.

I am one who bear witness of myself, and the Father who sent me beareth witness of me.

Jesus answered them, I have told you, and ye do not believe. The works that I do in my Fathers name, these bear witness of me.

When the Comforter is come, whom I will send to you from the Father, the Spirit of truth, which proceedeth from the Father, he will bear witness of me.

Pilate therefore said to him, Art thou a king then? Jesus answered, Thou sayest what is true; for I am a king. For this end have I been born, and for this cause have I come into the world, that I may bear witness to the truth. Every one that is of the truth listeneth to my voice.