Он пришёл для свидетельства, чтобы свидетельствовать о Свете, дабы все уверовали через него.
He came as a witness to testify concerning that light, so that through him all might believe.
He came as a witness, to bear witness about the light, that all might believe through him.
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.
This man came for a witness, to bear witness of the Light, that all through him might believe.
He came for witness, that he might witness concerning the light, that all might believe through him.