It reads plainly.
The hand-wringers are confounded and confused about Jesus' statements. He has a devil? Well no, others argue, or he wouldn't be giving sight to the blind. They then demand that he tell them plainly if he's the Messiah. He says he *did* tell them, but that they didn't believe him.
Everything he is saying, is sailing right over their heads. Nothing is getting through. They are misinterpreting his words. So deaf as they are, when Jesus says (v. 30), "I and the Father are one", they hear a crazy fellow claiming to be God. He then attempts to correct *that* gross misinterpretation, to no avail. Their hyper-literal bad eye sees a man claiming to be God, so stone him already. How can they apprehend a spiritual meaning about unity of mind and purpose, when they can't even grasp those basic sheep metaphors.
Now in Christian circles, this cluelessness has been turned into keen insight! Ah, yeah, these brilliant thinkers perceived accurately that he was claiming to be God. Never mind that the context of the entire exchange is that Jesus is pointing out to these fine folks that they are blind and deaf.
As far as chapter 16. Of course he came from the Father. The Father sent him. The Father told him a whole lot of stuff. That's what you do when you send a person on a mission. Tell him everything so he can accomplish the task. John the Baptist was sent also, in order to prepare the way.
More from the bizarro world of extreme irony: the popular belief that an antichrist is going to sit in the temple and claim to be God, and that the Jews are going to fall for it. The Jews, the same who reject the Christian Jesus/trinity in large part because they they firmly reject any man-god messiah or anyone claiming to be of that nature, are supposedly going to fall for such a scam. In the real world, however, it is the Church who believes in and is expecting a God-man messiah. In the NT, besides the literal "He spake of the temple of his body", the temple, metaphorically, is the body of Christ i.e. the Church. Besides, the last thing a humble, Godly man is going to think, or "know", is that he is God. If he's "fully man" and yet "fully God", the whole concept implodes on itself. Such is the way with nonsensical doctrines. What are people thinking with this stuff?
And so it goes.
Society's rejects, old folks, assorted outliers and outcasts... they don't really have to care what people think of them. Kind of like those tax-collectors, harlots, sinners, and people deficient in the knowledge of proper hand-washing techniques. So they sat there and listened to the Master, overwhelmed by his mercy, love, and compassion. Real healing properties there. He made them whole, at peace. Yet for some reason, the religious establishment just didn't feel the love, and certainly not the peace. For them it was a sword.
History repeats. The experts are going to see him and then produce a laundry list of doctrinal reasons why he's not the one.
“He then attempts to correct *that* gross misinterpretation, to no avail. Their hyper-literal bad eye sees a man claiming to be God, so stone him already.”
Your entire argument hinges on this, that you claim Jesus did NOT believe himself to be God, yet it is easy to demonstrate that he did. Now, Jesus was a Jew, a holy and righteous Jew, I think we can both agree on that. The 10 commandments of the Jewish faith, their highest law, forbids worship of anyone but God. Yet, we see in the New Testament men worshiping Jesus, and he never says a word or lifts a finger to stop them from doing what, if he were not God, would be the gravest sin according to Jewish law.
For example:
‘And when they climbed into the boat, the wind died down. Then those who were in the boat worshiped him, saying, “Truly you are the Son of God.”’ Matthew 14:32-33
‘And they departed quickly from the sepulchre with fear and great joy; and did run to bring his disciples word. And as they went to tell his disciples, behold, Jesus met them, saying, All hail. And they came and held him by the feet, and worshipped him’ Matthew 28:8-9
Now, if Jesus was just a holy man and not God, he would have reprimanded these people as Peter or angels did when people tried to worship them, however Jesus never did that, he allowed the worship. This leaves us only with two possibilities: either Jesus believed himself to be God, or Jesus was NOT a holy man at all, but a scoundrel who knew himself not to be God, but allowed people to gravely sin by worshiping him anyway. There is no third option where Jesus is holy but not God.