John 19:35

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. For these things come to pass that the Scripture might be fulfilled. A bone of him shall not be broken. And again another Scripture saith, They shall look upon him whom they pierced.

He that hath seen hath borne witness ... John here refers to himself. As many of the most capable scholars have affirmed, if John had had in mind some other witness than himself, he could not possibly have used the words here rendered "hath borne witness." Westcott, in his masterful discussion of this place, declared that John's use of the perfect tense makes it certain that the reference is to himself. The use of the third person also harmonizes with John's earlier use of it in this same chapter (John 19:26-27), both references speaking unequivocally of himself.

For discussion of the two prophecies mentioned here, see under John 19:34, above.