Psalms 18:43

⁴¹ They cried for help, but there was no one to save them— to the LORD, but He did not answer.

⁴² I ground them as dust in the face of the wind; I trampled them like mud in the streets.

You have delivered me from the strife of the people; You have made me the head of nations; a people I had not known shall serve me.

⁴⁴ When they hear me, they obey me; foreigners cower before me.

⁴⁵ Foreigners lose heart and come trembling from their strongholds.

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

Compare

BSB: You have delivered me from the strife of the people; You have made me the head of nations; a people I had not known shall serve me.
KJV: Thou hast delivered me from the strivings of the people; and thou hast made me the head of the heathen: a people whom I have not known shall serve me.
WEB: You have delivered me from the strivings of the people. You have made me the head of the nations. A people whom I have not known shall serve me.
ASV: Thou hast delivered me from the strivings of the people; Thou hast made me the head of the nations: A people whom I have not known shall serve me.
DARBY: Thou hast delivered me from the strivings of the people; thou hast made me the head of the nations: a people I knew not doth serve me.
BLB: You rescued me from the disputes of people; You set me as the head of nations; a people I have not known shall serve me.

ÅB: Du redder meg fra fiendehærer,
du setter meg som leder for hedninger;
folkeslag som jeg ikke kjenner, tjener meg.
OTB: Du reddet meg fra folkets stridigheter;
Du gjorde meg til leder over nasjonene;
Et folk jeg ikke kjente, tjener meg.
B1930: Du redder mig fra folkekamper, du setter mig til hode for hedninger; folkeferd som jeg ikke kjenmer, tjener mig.

Isaiah 55:5
Surely you will summon a nation you do not know, and nations who do not know you will run to you. For the LORD your God, the Holy One of Israel, has bestowed glory on you.”
Read in context
2 Samuel 3:1
Now the war between the house of Saul and the house of David was protracted. And David grew stronger and stronger, while the house of Saul grew weaker and weaker.
Read in context
Isaiah 52:15
so He will sprinkle many nations. Kings will shut their mouths because of Him. For they will see what they have not been told, and they will understand what they have not heard.
Read in context
1 Peter 2:10
Once you were not a people, but now you are the people of God; once you had not received mercy, but now you have received mercy.
Read in context
2 Samuel 19:9
And all the people throughout the tribes of Israel were arguing, “The king rescued us from the hand of our enemies and delivered us from the hand of the Philistines, but now he has fled the land because of Absalom.
Read in context
Ephesians 1:22
And God put everything under His feet and made Him head over everything for the church,
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Acts 5:31
God exalted Him to His right hand as Prince and Savior, in order to grant repentance and forgiveness of sins to Israel.
Read in context
Romans 15:18
I will not presume to speak of anything except what Christ has accomplished through me in leading the Gentiles to obedience by word and deed,
Read in context