1)
How did Hashem heal him?
1.
Rashi: You pardoned my sin. This is like "va'Shav v'Rafa Lo" (Yeshayah 6:10). Radak - You healed me from illness of the Nefesh. Even though I was punished in this world, all was good in my eyes, since You healed me Nefesh that it will not descend to Gehinom.
2.
Malbim: You healed me, but not via nature. Rather, I prayed to You and You healed me without doctors or sap (medicine).
