Intro 9: 10. Witness (Testimony)

The language of witness or testimony is one of John's distinctive features. Throughout the Gospel, God provides abundant evidence for Jesus' identity so that people may believe. Faith is not presented as blind belief but as a response to trustworthy testimony.

John the Baptist is the first witness: "He came as a witness to testify concerning that light." (John 1 v 7)

As the Gospel unfolds, many voices bear witness to Jesus: John the Baptist points to Him as the Lamb of God; The Father speaks through His works and confirms the Son; Jesus' miraculous signs testify to His divine authority; The Scriptures point forward to Christ; The Holy Spirit continues to bear witness after Jesus' departure; The disciples testify to what they have seen and heard; The beloved disciple presents his own eyewitness account as reliable testimony.

Jesus Himself says: ’’The very works that I am doing testify that the Father has sent me." (John 5 v 36)

John concludes by affirming that his Gospel is itself an eyewitness testimony: "This is the disciple who testifies to these things... and we know that his testimony is true." (John 21 v 24) The purpose of all this testimony is that readers may come to believe that Jesus is the Messiah, the Son of God.
May God lead you into all truth, David