John 21:24
It is this disciple who states these things, and who recorded them; and we know that his statement is true.
John 19:35
This is the statement of one who actually saw it--and his statement may be relied upon, and he knows that he is speaking the truth--and it is given in order that you also may be convinced.
3 John 1:12
Every one has always had a good word for Demetrius, and the Truth itself speaks for him. Yes, and we also add our good word, and you know that what we say about him is true.
John 15:27
Yes, and you also are to bear testimony, because you have been with me from the first.
1 John 1:1-2
It is of what has been in existence from the Beginning, of what we have heard, of what we have seen with our eyes, of what we watched reverently and touched with our hands--it is about the Word who is the Life that we are now writing.
1 John 5:6
He it is whose Coming was attested by means of Water and Blood--Jesus Christ himself; not by Water only, but by Water and by Blood. And there is the Spirit also to bear testimony, and the Spirit is Truth itself.