The breaker - Jehovah-Messiah, who breaks through every obstacle in the way of their restoration: not as formerly breaking forth to destroy them for transgression (Exo 19:22; Jdg 21:15), but breaking a way for them through their enemies.
they - the returning Israelites and Jews.
passed through the gate - that is, through the gate of the foe’s city in which they had been captives. So the image of the resurrection (Hos 13:14) represents Israel’s restoration.
their king - “the Breaker,” peculiarly “their king” (Hos 3:5; Mat 27:37).
pass before them - as He did when they went up out of Egypt (Exo 13:21; Deu 1:30, Deu 1:33).
the Lord on the head of them - Jehovah at their head (Isa 52:12). Messiah, the second person, is meant (compare Exo 23:20; Exo 33:14; Isa 63:9).