Isaiah31
Woe to Those Who Trust in Egypt
The Lord Will Defend Zion
A Call to Repentance
The Downfall of Assyria
Study Notes for Isaiah 31
Verse 1
This 'woe' oracle condemns Judah's desperate political policy of seeking military alliance with Egypt, relying on their famed chariots and cavalry instead of trusting the covenant-keeping God of Israel.
Verse 2
God’s wisdom is contrasted with human folly; He knows their treacherous plans and will not withdraw the promised judgment against both the evildoers in Judah and their ungodly allies.
Verse 3
This verse provides the theological core of the critique: Egypt is merely human ('men, not God'), and their power is finite ('flesh, not spirit'), establishing the fundamental error of relying on creaturely strength.
Verse 4
The imagery of the lion roaring over its prey signifies God’s fierce, non-negotiable determination to fight for Jerusalem (Mount Zion) against overwhelming enemy forces, regardless of the noise or multitude of the opposition.
Verse 5
The metaphor of birds hovering and defending suggests swift, comprehensive, and protective care. The phrase 'passing over' echoes the Exodus narrative (Passover), where God protected Israel by sparing those under His divine shield.
Verse 6
The divine promise of protection (Vv. 4-5) is followed by a direct appeal for the people to repent and return to Yahweh, acknowledging their deep history of spiritual rebellion.
Verse 7
The assurance that 'in that day' every man shall cast away his idols indicates that God's deliverance will result in genuine, widespread spiritual renewal and purification from the sin of idolatry.
Verse 8
The defeat of Assyria is guaranteed to be supernatural, achieved by God directly ('not of a mighty man'), reinforcing the message that salvation comes solely through divine intervention, not human military prowess.
Verse 9
The description of the Assyrian flight emphasizes their terror and discomfiture. The final phrase, 'whose fire is in Zion,' refers to God's holy, purifying, and protective presence established in Jerusalem.