It is this disciple who testifies to these things and has written them, and we know that his testimony is true.
And you also testify, because you have been with me from the beginning.
An eyewitness has testified, and his testimony is true; he knows that he is speaking the truth, so that you also may [come to] believe.
This is the one who came through water and blood, Jesus Christ, not by water alone, but by water and blood. The Spirit is the one that testifies, and the Spirit is truth.
Demetrius receives a good report from all, even from the truth itself. We give our testimonial as well, and you know our testimony is true.