Psalms 41:4

² The LORD will preserve him, and keep him alive; and he shall be blessed upon the earth: and thou wilt not deliver him unto the will of his enemies.

³ The LORD will strengthen him upon the bed of languishing: thou wilt make all his bed in his sickness.

I said, LORD, be merciful unto me: heal my soul; for I have sinned against thee.

⁵ Mine enemies speak evil of me, When shall he die, and his name perish?

⁶ And if he come to see me, he speaketh vanity: his heart gathereth iniquity to itself; when he goeth abroad, he telleth it.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: I said, “O LORD, be gracious to me; heal me, for I have sinned against You.”
KJV: I said, LORD, be merciful unto me: heal my soul; for I have sinned against thee.
WEB: I said, “LORD, have mercy on me! Heal me, for I have sinned against you.”
ASV: I said, O Jehovah, have mercy upon me: Heal my soul; for I have sinned against thee.
DARBY: As for me, I said, Jehovah, be gracious unto me: heal my soul; for I have sinned against thee.
BLB: I said, “O YHWH, be gracious to me; heal my soul, for I have sinned against You.”

ÅB: Jeg sier: «Herre, vær nådig mot meg, helbred sjelen min!
for jeg har syndet mot deg.»
OTB: Men jeg sa: "Herre, vis nåde mot meg;
Helbred min sjel, for jeg har syndet mot Deg."
B1930: Jeg sier: Herre, vær mig nådig, helbred min sjel! for jeg har syndet imot dig.

Psalms 103:3
Who forgiveth all thine iniquities; who healeth all thy diseases;
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James 5:15–16
And the prayer of faith shall save the sick, and the Lord shall raise him up; and if he have committed sins, they shall be forgiven him.
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Hosea 6:1
Come, and let us return unto the LORD: for he hath torn, and he will heal us; he hath smitten, and he will bind us up.
Read in context
2 Chronicles 30:18–20
For a multitude of the people, even many of Ephraim, and Manasseh, Issachar, and Zebulun, had not cleansed themselves, yet did they eat the passover otherwise than it was written. But Hezekiah prayed for them, saying, The good LORD pardon every one
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Psalms 147:3
He healeth the broken in heart, and bindeth up their wounds.
Read in context
Psalms 6:2–4
Have mercy upon me, O LORD; for I am weak: O LORD, heal me; for my bones are vexed.
Read in context
Psalms 32:5
I acknowledged my sin unto thee, and mine iniquity have I not hid. I said, I will confess my transgressions unto the LORD; and thou forgavest the iniquity of my sin. Selah.
Read in context
Psalms 51:1–4
Have mercy upon me, O God, according to thy lovingkindness: according unto the multitude of thy tender mercies blot out my transgressions.
Read in context