Jesus' 5 Evidences that God was/is His Father

  A month ago, I posted 8 Arguments for the Bible's Reliability; now I want to share something that is tangentially related, the reasons that Jesus is recorded to have given for being from the Heavenly Father. John 5:18 says, "This was why the Jews were seeking all the more to kill him, because not only was he breaking the Sabbath, but he was even calling God his own Father, making himself equal with God." (ESV, emphasis added) In the verses following that, Jesus lists several results of God being his father.  These deal with how his character and his actions reflect those of the Father.

 Then, in John 5:30-47, Jesus gives a series of arguments about why he should be accepted as whom he says he is. These are as follows:

1.  Jesus himself claims God is his father (Jn 5:31, cf vs 17-18).
2.  John the Baptist also attested to this truth (Jn 5:32-36; cf 1:29-35; 3:22ff).
3.  The "works" or actions - including the healing that spawned this discussion - attest to the origin of Jesus (Jn 5:36; cf 3:2; 5:1-17). 
4.  The Father who sent him has also attested to this truth (Jn 5:37-38; cf 12:27-30; Matthew 3:16-17; 17:5).
5.  The Scriptures bear witness to him (Jn 5:39-40; cf Jn 1:45; 2:17).
• Moses' writings, as a subset of Scripture, witness to the person of Jesus (Jn 5:45-47; cf Jn 3:14; 6:32; witnesses about the Christ from Moses' writings).  

  It is interesting that each of these points has support from within the Gospel of John, mostly prior to this account. These are evidences which the listeners could evaluate, events or sayings they were already apparently familiar with. (Mt 3:16-17 shows that God had already spoken from heaven publicly once, in addition to the second-hand recounting of that event that John given in John 1.)

 Now, the connection to the previous posts is a bit clearer. Presuming we accept the Gospel accounts as reliable, then the arguments given here are ones that must be given weight. Jesus did not call on people to embrace his claims in a vacuum or without due consideration. Nor did he simply overwhelm them with the miraculous in such a way that a series of illusions could be the basis of his claim(s). The evidences were varied and often independent. 

  So I ask, what would it take to convince you or I, reasonable people, that the apparently impossible was actually possible? What proofs should we require to believe that God became a man, that the Son of God walked this earth in human flesh? If this is not denied a priori, what would you look for as evidence and how would this relate to the proofs that were given?  

  One final point that should be mentioned is that these are not the only proofs that either the New Testament or Jesus himself is recorded as giving to support who he was and is. The anecdote in John 1:47-51 makes this clear. As well, here's another one I came across in my reading recently.

• Matthew 12:38-41 - Jesus foretold that there would be a parallel between his burial and resurrection and the life of the prophet Jonah. This is not a prophecy by Jonah, but rather Jesus himself prophesying about what will happen and using a familiar story as the pivot point. (cf Mt 17:22-23)