This oracle came in the year of King Ahaz's death:
References for Isaiah 14:28
Don't rejoice, all you Philistines, that the rod that struck you is broken, because from the snake's root a viper will grow, and it will produce a winged creature.
The oldest offspring of the poor will graze; their needy will lie down secure. But he will starve your offspring to death, and murder all who remain.
Wail, gate! Cry out, city! Melt in terror, all you Philistines! Smoke is coming from the north; there is no straggler in its ranks.
References for Isaiah 14:31
What will one say to that nation's messengers? The LORD has founded Zion; the oppressed among God's people will find refuge there.