When Israel united with Aram to battle against Jerusalem King Ahaz (Judah) alined with Assyria rejecting God who forbade Assyrian treaty, so Isaiah prophesized virgin birth cutting off Ahaz's kingly line.
The fall of the enemy alliance is promised before the priest's baby Maher-shalal-hash-baz can speak, the Lord is going to also shatter His people in Jerusalem but save a remnant.
After God has judged Israel using then world power Babylon, they also will fall and be judged, the falls of Edom (Dumah) and Arabia are also foretold.
When the righteous perish no one notices but they enter peace, to them you have made drink and grain offerings, to the wicked your good deeds and idols will not save you like a rolling sea.
Jeremiah is a prophet sent by God with a message of judgment to Israel who would not respond to his word as they proceeded into exile in Babylon, the remnant is promised the protection of God and future forgiveness of sins.