Jesus never ever told anyone that it’s better for them to not be healed because it will make a better testimony. Rather, every person who came to him was healed, as well as many he sought out. It’s good to be patient in sickness, but so much better to receive the gift of God’s healing, which brings glory to God!

The Bible instructs us, “Do not withhold good from those to whom it is due, when it is in your power to act (Proverbs 3:27). It was definitely within Jesus’ power to heal everyone—he did not withhold the good, he gave freely.

Jesus said, “Ask and it will be given to you; seek and you will find; knock and the door will be opened to you. For everyone who asks receives; the one who seeks finds; and to the one who knocks, the door will be opened.”

“Which of you, if your son asks for bread, will give him a stone? Or if he asks for a fish, will give him a snake? If you, then, though you are evil, know how to give good gifts to your children, how much more will your Father in heaven give good gifts to those who ask him!” Matthew 7:7-11

When we ask for healing, he doesn’t say no, it’s better if you’re sick.

Yes, I know all too well that not everyone who asks God for healing is healed. I don’t know why—there are many dynamics in each case, but he doesn’t say that it makes for a better testimony. I recommend though, that people who have this question ask God rather than making up their own reasons or putting words into Jesus’ mouth.

What about Paul’s “thorn in the flesh?” Read about that here:https://urbanlegendsbible.com/?s=thorn+in+the+flesh