Sickness & healing

My grace is sufficient for you, for My power is perfected in weakness.

Is any one of you suffering? He should pray. Is anyone cheerful? He should sing praises. Is any one of you sick? He should call the elders of the church to pray over him and anoint him with oil in the name of the Lord. And the prayer offered in faith will restore the one who is sick. The Lord will raise him up. If he has sinned, he will be forgiven. Therefore confess your sins to each other and pray for each other so that you may be healed. The prayer of a righteous man has great power to prevail.
James 5:13–16

Bless the LORD, O my soul, and do not forget all His kind deeds— He who forgives all your iniquities and heals all your diseases,
Psalm 103:2–3

or because of these surpassingly great revelations. So to keep me from becoming conceited, I was given a thorn in my flesh, a messenger of Satan, to torment me. Three times I pleaded with the Lord to take it away from me. But He said to me, “My grace is sufficient for you, for My power is perfected in weakness.” Therefore I will boast all the more gladly in my weaknesses, so that the power of Christ may rest on me. That is why, for the sake of Christ, I delight in weaknesses, in insults, in hardships, in persecutions, in difficulties. For when I am weak, then I am strong.
2 Corinthians 12:7–10

Surely He took on our infirmities and carried our sorrows; yet we considered Him stricken by God, struck down and afflicted. But He was pierced for our transgressions, He was crushed for our iniquities; the punishment that brought us peace was upon Him, and by His stripes we are healed.
Isaiah 53:4–5

The LORD will sustain him on his bed of illness and restore him from his bed of sickness.
Psalm 41:3

Therefore we do not lose heart. Though our outer self is wasting away, yet our inner self is being renewed day by day.
2 Corinthians 4:16