All of Jeremiah prophecy are fulfilled. What you quoted is a prophecy of Jesus
The Righteous Branch
23 “Woe to the shepherds who are destroying and scattering the sheep of my pasture!” declares the Lord. 2 Therefore this is what the Lord, the God of Israel, says to the shepherds who tend my people: “Because you have scattered my flock and driven them away and have not bestowed care on them, I will bestow punishment on you for the evil you have done,” declares the Lord. 3 “I myself will gather the remnant of my flock out of all the countries where I have driven them and will bring them back to their pasture, where they will be fruitful and increase in number. 4 I will place shepherds over them who will tend them, and they will no longer be afraid or terrified, nor will any be missing,” declares the Lord.
5 “The days are coming,” declares the Lord,
“when I will raise up for David[a] a righteous Branch,
a King who will reign wisely
and do what is just and right in the land.
6 In his days Judah will be saved
and Israel will live in safety.
This is the name by which he will be called:
The Lord Our Righteous Savior.
7 “So then, the days are coming,” declares the Lord, “when people will no longer say, ‘As surely as the Lord lives, who brought the Israelites up out of Egypt,’ 8 but they will say, ‘As surely as the Lord lives, who brought the descendants of Israel up out of the land of the north and out of all the countries where he had banished them.’ Then they will live in their own land.”