This was the disciple who bears testimony to these facts and who wrote them down; his testimony, we know, is true.
He who saw it has borne witness (his witness is true; God knows he is telling the truth), that you may believe.
and you too are witnesses, for you have been with me from the very beginning.
Everybody testifies to Demetrius, and so does the Truth itself: I testify to him too, and you know my testimony is true.
Jesus Christ, he it is who came by water, blood, and Spirit — not by the water alone, but by the water and the blood.