NT.filter - kjv testifieth:

kjv@John:3:32 @ And what he hath seen and heard, that he testifieth; and no man receiveth his testimony.

kjv@John:21:24 @ This is the disciple which testifieth of these things, and wrote these things: and we know that his testimony is true.

kjv@Hebrews:7:17 @ For he testifieth, Thou art a priest for ever after the order of Melchisedec.