Isaiah 14: 28-30. “In the year that king Ahaz died was this burden. Rejoice not thou, whole Palestina, because the rod of him that smote thee is broken: for out of the serpent’s root shall come forth a cockatrice, and his fruit shall be a fiery flying serpent. And the firstborn of the poor shall feed, and the needy shall lie down in safety: and I will kill thy root with famine, and he shall slay thy remnant.”
In verse 28, the death of Ahaz is to be taken with what follow, not with what has preceded. This burden, or oracle.refers to the doom of Philistia (Palestina). Hezekiah became king after Ahaz, and he completely defeated the Philistines (2 Kings 18:8).
The rod in v. 29 is the sceptre of David that had been broken by all that had happened in and against Judah, and over which the Philistines gloated. The cockatrice (basilisk) is Hezekiah. In mythology, a basilisk is a deathly poisonous reptile from which all other serpents will flee. If you’re interested, you can read quite a bit about this creature and see some rather fanciful pictures. The point here is that Hezekiah regained the strength of his country, and Israel’s enemies ran away from his power.
The next verse is descriptive of the Millenial Kingdom, in which the poor and the needy will be satisfied.