Jesus was not a show-off or a braggart. He didn’t go around telling everyone who He was. What He did do was let others, and also His works to speak or testify on His behalf.
In the fifth chapter of John’s gospel there are four witnesses who testify as to who Jesus is. John the Baptist was one who testified by saying, “Behold the Lamb of God who takes away the sins of the world!” And in another place that, “He was before me, and I must decrease and He must increase!” John did no miracles or mighty works, but Jesus said, “I have greater works than John.” The works Jesus did were of the Father, and these two become our second and third witnesses. Nicodemus said of Jesus, “… no one can do these signs that you do unless God is with Him.” So the works Jesus did were of the miraculous nature, and things only God could do. Jesus said, “But I have a greater witness than John’s; for the works which the Father has given Me to finish—the very works that I do—bear witness of Me, that the Father has sent Me. And the Father Himself, who sent Me, has testified of Me.”
Jesus didn’t stop there. The Jews prided themselves in being followers of Moses and the law, and Jesus testified that the very scriptures which they said they followed actually testified of Him. These are our fourfold witnesses. Do you believe?