'Testify' in the Bible

The same came as a witness, that he might testify about the light, that all might believe through him.

He was not the light, but was sent that he might testify about the light.

and because he didn't need for anyone to testify concerning man; for he himself knew what was in man.

Most certainly I tell you, we speak that which we know, and testify of that which we have seen, and you don't receive our witness.

You yourselves testify that I said, 'I am not the Christ,' but, 'I have been sent before him.'

"If I testify about myself, my witness is not valid.

But the testimony which I have is greater than that of John, for the works which the Father gave me to accomplish, the very works that I do, testify about me, that the Father has sent me.

"You search the Scriptures, because you think that in them you have eternal life; and these are they which testify about me.

The world can't hate you, but it hates me, because I testify about it, that its works are evil.

The Pharisees therefore said to him, "You testify about yourself. Your testimony is not valid."

Jesus answered them, "Even if I testify about myself, my testimony is true, for I know where I came from, and where I am going; but you don't know where I came from, or where I am going.

Jesus answered them, "I told you, and you don't believe. The works that I do in my Father's name, these testify about me.

"When the Counselor has come, whom I will send to you from the Father, the Spirit of truth, who proceeds from the Father, he will testify about me.

You will also testify, because you have been with me from the beginning.

Jesus answered him, "If I have spoken evil, testify of the evil; but if well, why do you beat me?"

Pilate therefore said to him, "Are you a king then?" Jesus answered, "You say that I am a king. For this reason I have been born, and for this reason I have come into the world, that I should testify to the truth. Everyone who is of the truth listens to my voice."