Just because a person dies from a disease doesn't mean that person wasn't healed.
In fact, if they're saved, natural death guarantees their healing.
Some of the Jews thought when then Messiah would come, He'd conquer the Romans and usher in a new government. The Messiah came but when He didn't perform the way they thought He would perform, they rejected the Messiah.
Just because they rejected the Messiah doesn't mean that the Messiah didn't come.
He wasn't healed.
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Hebrews 13:23 Know ye that our brother Timothy is set at liberty