Psalms 18:50

⁴⁸ who delivers me from my enemies. You exalt me above my foes; You rescue me from violent men.

⁴⁹ Therefore I will praise You, O LORD, among the nations; I will sing praises to Your name.

Great salvation He brings to His king. He shows loving devotion to His anointed, to David and his descendants forever.

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

Compare

BSB: Great salvation He brings to His king. He shows loving devotion to His anointed, to David and his descendants forever.
KJV: Great deliverance giveth he to his king; and sheweth mercy to his anointed, to David, and to his seed for evermore.
WEB: He gives great deliverance to his king, and shows loving kindness to his anointed, to David and to his offspring, forever more.
ASV: Great deliverance giveth he to his king, And showeth lovingkindness to his anointed, To David and to his seed, for evermore. Psalm 19 For the Chief Musician. A Psalm of David.
DARBY: [It is he] who giveth great deliverances to his king, and sheweth loving-kindness to his anointed, to David, and to his seed for evermore.
BLB: He is making great the salvation of His king and showing loving devotion to His anointed, of David and to his seed, even to forever.

ÅB: Han gjør redningen stor for sin utvalgte konge,
han viser trofast kjærlighet til sin salvede,
mot David og mot hans slekt til evig tid.
OTB: Han gir stor frelse til sin konge,
Og viser trofast kjærlighet til sin salvede,
Til David og hans etterkommere for alltid.
B1930: Han gjør frelsen stor for sin konge, han gjør miskunnhet mot sin salvede, mot David og mot hans ætt til evig tid.

Psalms 144:10
to Him who gives victory to kings, who frees His servant David from the deadly sword.
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Psalms 132:10
For the sake of Your servant David, do not reject Your anointed one.
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2 Samuel 7:13
He will build a house for My Name, and I will establish the throne of his kingdom forever.
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Psalms 89:3–4
You said, “I have made a covenant with My chosen one, I have sworn to David My servant:
Read in context
Romans 11:29
For God’s gifts and His call are irrevocable.
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Luke 1:31–33
Behold, you will conceive and give birth to a son, and you are to give Him the name Jesus.
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Acts 2:34–36
For David did not ascend into heaven, but he himself says: ‘The Lord said to my Lord, “Sit at My right hand
Read in context
Isaiah 9:6–7
For unto us a child is born, unto us a son is given, and the government will be upon His shoulders. And He will be called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace.
Read in context