There is a great difference between good and bad...that some folks do not understand--or choose not to accept. If they knew the God of the Bible, they would know that He does not inflict sickness or disease upon His people to chasten or teach. There is no instance in the Word ANYWHERE of Him doing this...to His people...to chasten or teach.
Bring it...so others can see the Truth.
Deut 32:39 “See now that I, indeed I, am he!” says the Lord,
“and there is no other god besides me.
I kill and give life,
I wound and I heal,
and none can resist my power.
1 Sam
2:6 The Lord both kills and gives life;
he brings down to the grave and raises up.
2:7 The Lord impoverishes and makes wealthy;
he humbles and he exalts.
2 Kings
5:6 He brought the letter to king of Israel. It read: “This is a letter of introduction for my servant Naaman, whom I have sent to be cured of his skin disease.”
5:7 When the king of Israel read the letter, he tore his clothes and said, “Am I God? Can I kill or restore life?
Job
5:18 For he wounds, but he also bandages;
he strikes, but his hands also heal.
Hos
6:1 “Come on! Let’s return to the Lord!
He himself has torn us to pieces,
but he will heal us!
He has injured us,
but he will bandage our wounds!
The Hosea passage is interesting because Hosea thinks that God had purposely fought against His own people. Ezekiel thinks the same thing:
Eze
5:16 I will shoot against them deadly, destructive arrows of famine, which I will shoot to destroy you. I will prolong a famine on you and will remove the bread supply.
5:17 I will send famine and wild beasts against you and they will take your children from you. Plague and bloodshed will overwhelm you, and I will bring a sword against you. I, the Lord, have spoken!”
So it's incorrect to say that God doesn't inflict His own people. In fact, the exile was God doing and half of the prophetitc and historical writings deal with what God did/was doing to His own people.