John 8:16-20
John 8:16 (KJB)
And yet if I judge, my judgment is true: for I am not alone, but I and the Father that sent me.
Since Jesus would have the knowledge of what was in menís hearts including their motives and intents, if He did make a judgment it would be absolutely true because He would have all the facts. It would not be a judgment where He needed to have human witnesses. He then continues to state that any judgment that would be made, would be made in concert with the Father because He is not acting alone and the Father would be witness to the judgment which would mean corroboration on the highest level.
John 8:17 (KJB)
It is also written in your law, that the testimony of two men is true.
(Deu 17:5-6 KJV) Then shalt thou bring forth that man or that woman, which have committed that wicked thing, unto thy gates, even that man or that woman, and shalt stone them with stones, till they die. {6} At the mouth of two witnesses, or three witnesses, shall he that is worthy of death be put to death; but at the mouth of one witness he shall not be put to death. Under the law, if anyone was to be put to death for any infraction of the law, there must be at least two or three credible witnesses to confirm the crime. One witness was insufficient because their account of the crime had to be substantiated.
John 8:18 (KJB)
I am one that bear witness of myself, and the Father that sent me beareth witness of me.
Jesus was able to bear witness of Himself by means of the miracles that He did which had shown His deity. No one could heal a man of 38 years of some type of paralyzing disease unless they were divine. To confirm the legitimacy of Jesus to these people, God the Father was also witness to the Lord Jesus Christ and this was done at His baptism and then on the Mount of Transfiguration. So to keep with the law, Jesus was not His only witness but His Father was also His witness making the requirement of two witnesses under the law.
John 8:19 (KJB)
Then said they unto him, Where is thy Father? Jesus answered, Ye neither know me, nor my Father: if ye had known me, ye should have known my Father also.
Know and Known - To Fully know, recognize or fully understand
They now responded to His statement about His Father. They asked Him where His Father was? When they asked Him about where His Father was, they were seeking a location. They may have had in mind Joseph the Carpenter so they could send for him and discuss his son. Once again Jesus was speaking on a spiritual level but the Jews were thinking on an earthly level. Jesus then declares to them that they do not know Him or His Father. They were unable to recognize who He was because of their Scriptural illiteracy and their personal prejudices. If they would have known Him, they would also have known from where He came from and that would lead them into knowing who His Father is. The key to knowing the Father is in the Lord Jesus Christ. If a person is truly saved in Christ, they will know the Father.
John 8:20 (KJB)
These words spake Jesus in the treasury, as he taught in the temple: and no man laid hands on him; for his hour was not yet come.
Jesus did not speak in secret nor was His teachings private. He made His teachings public so all could benefit from them. These words He had with the Jews were also spoken in public and I am sure the leaders would love to have arrested Him because of the accusation that they did not know God. They thought they were special because they had the law and Jesus comes along stating that they do not have nor know the Father. At this time they could not take Him because the hour of His arrest had not yet come and Godís timing had to be fulfilled just at the proper time. In every Christianís life, the timing of God always plays a large role. Nothing that happens in the Christianís life is ever coincidental.