Zephaniah 3.15:

YHWH has taken away the judgments against you;
he has cleared away your enemies.
The King of Israel, YHWH, is in your midst;
you shall never again fear evil.

Peter Leithart has some excellent commentary on this verse, but I am surprised he doesn’t tie in Romans and the inclusion of the Gentiles.  For example, from Romans 10:

But what does it say? “The word is near you, in your mouth and in your heart” (that is, the word of faith that we proclaim); because, if you confess with your mouth that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved. For with the heart one believes and is justified, and with the mouth one confesses and is saved. For the Scripture says, “Everyone who believes in him will not be put to shame.” For there is no distinction between Jew and Greek; for the same Lord is Lord of all, bestowing his riches on all who call on him. For “everyone who calls on the name of the Lord will be saved.”

Worldwide Lord (both Jews and Gentiles) = world wide justification for all who believe.