There once was a man, his name John, sent by God to point out the way to the Life-Light. He came to show everyone where to look, who to believe in. John was not himself the Light; he was there to show the way to the Light.

He came as a witness, to testify about the Light, so that all might believe through him.

to tell about the light so that everyone might believe because of his testimony.

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

He came to tell people the truth about the Light so that through him all people could hear about the Light and believe.

The same came for witness, that he might bear witness of the light, that all might believe through him.

He came as a witness to testify concerning that light, so that through him all might believe.

This man came as a witness, to testify about the Light, so that all might believe [in Christ, the Light] through him.

For he came as a witness, to point the way to the Light of Life, and to help everyone believe.

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