And he that hath seen hath borne witness, and his witness is true: and he knoweth that he saith true, that ye also may believe.

And he who saw it has given witness (and his witness is true; he is certain that what he says is true) so that you may have belief.

Και ο ιδων μαρτυρει, και αληθινη ειναι η μαρτυρια αυτου, και εκεινος εξευρει οτι αληθειαν λεγει, δια να πιστευσητε σεις.

And he that saw it bare record, and his record is true: and he knoweth that he saith true, that ye might believe.