God was called King of Israel or King of Jacob and Jesus (Yeshua‘) was called King of the Jews. King of the nations is a name of God that indicates that His authority extends beyond a particular people throughout the entire world.
King of the nations in Hebrew:
Strong’s Concordance numbers: 4428, 1471
Bible reference: Jer. 10:7
Who should not fear you,
King of the nations?
This is your due.
Among all the wise leaders of the nations
and in all their kingdoms,
there is no one like you. (Jeremiah 10:7 NIV)
King of the nations in Greek:
Ho basileus tōn ethnōn
Strong’s Concordance numbers: 935, 1484
Bible reference: Rev. 15:3
[The victorious saints] sang the song of Moses, the bond-servant of God, and the song of the Lamb, saying,
“Great and marvelous are Your works,
O Lord God, the Almighty;
Righteous and true are Your ways,
King of the nations!” (Revelation 15:3)
Because the Greek words hagiōn and aiōniōn are alternative readings in some manuscripts (instead of ethnōn), some English versions have different names for God in this verse. “King of the saints” (e.g. KJV) is a common variant, “King of the ages” (e.g. RSV) is less common. The Amplified Bible adds the name, “Sovereign of the ages.”