Sickness and weakness of body and soul remind the suffering person that He has three enemies that bring trouble and misery, and it reminds him to turn to his Lord who forgives his sin, delivers from the devil, and triumphs over death.
The Lord answers with forgiveness of sins which is real enough to restore body and soul to health. God answers by not allowing the devil and the deadly demons to have their will and their way. Jesus answers by mercifully earning deliverance from sickness, weakness and death. The Enemy is overcome and the sick person is brought into the presence of God where life is enjoyed to the full forever.
“O Lord, be gracious to me and raise me up” is the prayer that can be used in repentance and faith in the Gospel any time one is afflicted by the enemies. God shares His life with him and keeps pouring it on since He is from everlasting to everlasting. Jesus says authoritatively, “he shall have eternal life,” now.