John 19:35

and you will bear witness also, because you have been with Me from the beginning.

but these have been written so that you may believe that Jesus is the Christ, the Son of God; and that believing you may have life in His name.

What was from the beginning, what we have heard, what we have seen with our eyes, what we beheld and touched with our hands, concerning the Word of Life—

and the life was manifested, and we have seen and bear witness and proclaim to you the eternal life, which was with the Father and was manifested to us—

what we have seen and heard we proclaim to you also, so that you may also have fellowship with us; and indeed our fellowship is with the Father, and with His Son Jesus Christ.

Demetrius has received a good witness from everyone, and from the truth itself; and we add our witness, and you know that our witness is true.