In this chapter and the first eight verses of the next chapter, we read of a woe to those who trust in false help and the new era. Judah are now being called to look at the spiritual because reality is to be found in the spiritual world, Psalm 127:1.
Judah sought to obtain horses and chariots from Egypt so that they could fight against the Assyrians, Isaiah 31:1. Both the Egyptians and Israelites will fall together, Isaiah 31:2, which would demonstrate the strength of God. We read of the stupidity of trusting in strength, Isaiah 31:3, that is, Judah’s reliance upon Egypt is foolish, for the Egyptians are mere men.
Barnes, in his commentary, says the following.
‘The whole narrative respecting the invasion of Sennacherib would lead to the conclusion that, at first, Hezekiah himself joined in the purpose of seeking that alliance with Egypt, but that afterwards he was led to abandon it and to use all his influence to induce his people to rely upon aid from God.’
Here, God calls upon Judah to repent. If Judah will repent, God will stand over her and will allow no one to take her away from Him. The Lord is the lion who will not be disturbed by the Assyrians’ cry against the city of Jerusalem, Isaiah 31:4.
Hailey, in his commentary, says the following.
‘The shepherds making the loud noise do not represent Assyria but represent the politicians of Judah and the Egyptians. The picture is clear, the lion is Jehovah, his prey is Jerusalem and the loud but ineffectual shepherds are the politicians and the Egyptians.’
Coffman, in his commentary, says the following, concerning Isaiah 31:5-6.
‘This is a renewal of God’s promise to protect and preserve Jerusalem from the Assyrians. ‘Just as the lion will not give up his prey, so Jehovah will not allow the Assyrians to rob him of Jerusalem.’ Jerusalem would indeed be severely punished, but God had reserved Babylon as the rod he would use for that punishment, not Assyria, which would also be destroyed by Babylon.’
God makes an appeal for repentance, Isaiah 31:6, but the call to turn from sin to God is a continual call, Luke 13:3 / Acts 2:38. As proof of their repentance, they were to reject their idols, Isaiah 31:7 / Isaiah 2:20.
No human hero delivered God’s people, Isaiah 31:8, but the power of Assyria was broken by the intervention of God, Isaiah 37:36. It’s God’s sword that brought down the Assyrians and only God can protect and deliver them, only God gives us our strength, Isaiah 31:9.
The arrogance of Sennacherib led him to believe that he could take Jerusalem. Jerusalem thus became the occasion for God to bring judgment upon him. For Sennacherib, Jerusalem became a consuming fire that devoured his army, Isaiah 31:9. We should trust God now and we shouldn’t trust the physical because all will go in time anyway.
Barnes, in his commentary, says the following.
‘Perhaps the whole idea here is, that Yahweh had a home in Jerusalem, with the usual appendages of a house, that his fire and his oven were there, an expression descriptive of a dwelling-place. If so, then the meaning is, that he would defend his own home and that the Assyrian could not expect to prevail against it.’