Working only inductively from the text...
In Matthew 8:17, is Matthew saying that as predicted Jesus healed some people in his ministry OR that Jesus dealt definitively with all human disease by "carrying it off" along with our sins, like the Scapegoat of old, and now it is "the children's portion"?:
[Mat 8:14-17 NLT] (14) When Jesus arrived at Peter's house, Peter's mother-in-law was sick in bed with a high fever. (15) But when Jesus touched her hand, the fever left her. Then she got up and prepared a meal for him. (16) That evening many demon-possessed people were brought to Jesus. He cast out the evil spirits with a simple command, and he healed all the sick. (17) This fulfilled the word of the Lord through the prophet Isaiah, who said, "He took our sicknesses and removed our diseases."
[Isa 53:1-12 NLT] (1) Who has believed our message? To whom has the LORD revealed his powerful arm? (2) My servant grew up in the LORD's presence like a tender green shoot, like a root in dry ground. There was nothing beautiful or majestic about his appearance, nothing to attract us to him. (3) He was despised and rejected--a man of sorrows, acquainted with deepest grief. We turned our backs on him and looked the other way. He was despised, and we did not care. (4) Yet it was our weaknesses he carried; it was our sorrows that weighed him down. And we thought his troubles were a punishment from God, a punishment for his own sins! (5) But he was pierced for our rebellion, crushed for our sins. He was beaten so we could be whole. He was whipped so we could be healed. (6) All of us, like sheep, have strayed away. We have left God's paths to follow our own. Yet the LORD laid on him the sins of us all. (7) He was oppressed and treated harshly, yet he never said a word. He was led like a lamb to the slaughter. And as a sheep is silent before the shearers, he did not open his mouth. (8) Unjustly condemned, he was led away. No one cared that he died without descendants, that his life was cut short in midstream. But he was struck down for the rebellion of my people. (9) He had done no wrong and had never deceived anyone. But he was buried like a criminal; he was put in a rich man's grave. (10) But it was the LORD's good plan to crush him and cause him grief. Yet when his life is made an offering for sin, he will have many descendants. He will enjoy a long life, and the LORD's good plan will prosper in his hands. (11) When he sees all that is accomplished by his anguish, he will be satisfied. And because of his experience, my righteous servant will make it possible for many to be counted righteous, for he will bear all their sins. (12) I will give him the honors of a victorious soldier, because he exposed himself to death. He was counted among the rebels. He bore the sins of many and interceded for rebels.
1 O Lord, who has believed our report? and to whom has the arm of the Lord been revealed? 2We brought a report as of a child before him; he is as a root in a thirsty land: he has no form nor comeliness; and we saw him, but he had no form nor beauty. 3But his form was ignoble, and inferior to that of the children of men; he was a man in suffering, and acquainted with the bearing of sickness, for his face is turned from us: he was dishonoured, and not esteemed. 4He bears our sins, and is pained for us: yet we accounted him to be in trouble, and in suffering, and in affliction. 5But he was wounded on account of our sins, and was bruised because of our iniquities: the chastisement of our peace was upon him; and by his bruises we were healed. 6All we as sheep have gone astray; every one has gone astray in his way; and the Lord gave him up for our sins. 7And he, because of his affliction, opens not his mouth: he was led as a sheep to the slaughter, and as a lamb before the shearer is dumb, so he opens not his mouth. 8In his humiliation his judgment was taken away: who shall declare his generation? for his life is taken away from the earth: because of the iniquities of my people he was led to death.
I notice this passage makes healing more about "empowerment" rather than "bought and paid for" type of association of healing with the gospel:
[Act 10:38 KJV] (38) How God anointed Jesus of Nazareth with the Holy Ghost and with power: who went about doing good, and healing all that were oppressed of the devil; for God was with him.
However, some other verses make it sound like "divine health" is something included in the "package" (the Christ/Messiah):
[1Jo 3:8 NIV] (8) The one who does what is sinful is of the devil, because the devil has been sinning from the beginning. The reason the Son of God appeared was to destroy the devil's work.
[Mar 7:27 NIV] (27) "First let the children eat all they want," he told her, "for it is not right to take the children's bread and toss it to the dogs."