For it shall come to pass in that day, saith the LORD of hosts, that I will break his yoke from off thy neck, and will burst thy bonds, and strangers shall no more serve themselves of him:
I will break his yoke from off thy neck - his, i:e., Jacob's (Jeremiah 30:7), the yoke imposed on him. The transition to the second person is frequent, God speaking of Jacob or Israel, at the same time addressing him directly. So "him" rightly follows.
Strangers shall no more serve themselves of him - "foreigners shall no more make him their servant" (Jeremiah 25:14). After the deliverance by Cyrus, Persia, Alexander, Antiochus, and Rome made Judea their servant. The full deliverance meant must therefore be still future.