Isaiah 31 continues the prophetic warning that began in Isaiah 30. Judah was facing an immanent attack from Assyria; her leaders believed the only solution was a political alliance with Egypt. This appeared to be a wise approach since Judah and Israel believed that Egypt had the armies to stand against them. They had horses, chariots, and an established military power. But Isaiah reveals that what appeared strategic, trusting in horses rather than God had consequences. David wrote in Psalm 20:7: Some boast in chariots and some in horses, but we will boast in the name of the LORD, our God. Deliverance will not come through diplomacy or military strength but through repentance and reliance on the Lord. But at this point no repentance for her reliance on men would be forthcoming.
V 1–3 Isaiah begins with the sixth prophetic “woe” that began in Isaiah 28. “Woe to those who go down to Egypt for help”. The focus is on human help rather than God. Hezekiah is king of Judah currently and Egypt represented the most advanced military of the ancient world. While Hezekiah was generally a godly king, his leadership still reflects the struggle to fully trust the Lord.
Horses and chariots were the equivalent of modern tanks and air power. Armies and political alliances are of no use if they do not rely on the Holy One of Israel. The exclusion of God from Israel’s strategy is a fatal flaw. Rather than look to the wisdom of God they relied on the wisdom of forming an alliance with Egypt. God will not allow it describing those not looking to Him as “evildoers and workers of iniquity.” In Revelation God rebuked the believers of Laodicea “I know your deeds, that you are neither cold nor hot; I wish that you were cold or hot. So because you are lukewarm, and neither hot nor cold, I will spit you out of My mouth.
In v 3 the powers of men pale in comparison to the power of God. “Now the Egyptians are men and not God, And their horses are flesh and not spirit.” The title “Holy One of Israel” emphasizes God’s uniqueness, sovereignty, and covenant relationship with His people. Men and nations can appear to be impressive and powerful, but men are temporal as is their power. We must build our lives and work on God and His Word and Spirit. When the Lord stretches out His hand, both the helper and the one helped will fall together. Human alliances will collapse when God opposes them.
V 4–5 Isaiah describes The Lord as a lion defending his prey. He is the defender of Zion who will deliver Jerusalem. The inability of Egypt is contrasted to God’s assurance to save His covenant children. The Hebrew word translated pass over is the same word used in Exodus of God’s promise “to pass over” those homes with the blood of the lamb on the doorpost (Ex 12:23). God Himself will fight for Jerusalem. Isaiah complements the image of the lion with another “Like flying birds so the Lord of hosts will protect Jerusalem.” Both reflect God’s care: The lion shows His strength against enemies. The birds show His tender protection for His people. Yeshua spoke to Israel in Matt 23:27 “Jerusalem, Jerusalem, who kills the prophets and stones those who are sent to her! How often I wanted to gather your children together, the way a hen gathers her chicks under her wings, and you were unwilling.”
Just as God protected Israel from destruction in Egypt in the events of Passover, He will again protect Jerusalem from destruction. Historically, this prophecy was fulfilled when the Assyrian army is miraculously defeated in Isaiah 37. In the future He will defend Israel as described in Zech 12-14 and Rom. 11 where Paul quotes Isaiah 59:20-21
V 6–7 Isaiah calls God’s people and King Hezekiah to repentance. “Return to Him from whom you have deeply defected.” Repentance required two things. First, they needed to return to God. Second, they needed to abandon their idols. Syncretism and idolatry were a major stumbling block to trusting and obeying. God is a jealous God. True repentance meant rejecting anything that competed with loyalty to the Lord.
What Does It Mean That God Is Jealous? God’s jealousy describes His holy, covenantal passion for our exclusive relationship with Him. Exodus 34:14: “The Lord, whose name is Jealous, is a jealous God.” His jealousy reflects who He is. God’s jealousy is righteous, protective, not insecure but rooted in His love.
God describes His relationship with Israel as a marriage covenant. Isa. 54:5 “Your Maker is your husband.” Hosea portrays Israel as an unfaithful spouse. Misplaced affection and trust is why idolatry is so grievous to God. In this regard we have become partakers with Israel as Paul writes Eph 2:13 “But now in Messiah Yeshua you who formerly were far off have been brought near by the blood of Messiah.” He is the bridegroom and we are the bride (Matt. 9:15).
In Isaiah 31, the issue is not primarily idols of wood and stone but trusting in Egypt. Idolatry is anything that replaces God as the object of reliance, security, and hope. Judah looked to Egypt to save them. By their actions they were saying “God is not enough. We need something else to save us.”
God’s jealousy is not just about His honor. It is about our good. Idolatry takes away from the source of life, joy, and peace. So, when God commands His people to turn away from idols, He is not restricting us. He is rescuing us. Idolatry ultimately destroys us. Idolatry distorts reality. They are made by men and cannot see, speak or act. Yet people trust their own creation rather than the Creator. Trusting in flesh rather than The Eternal Spirit of God, men rather than God is a form of idolatry.
V 8–9 The chapter ends with God’s judgment against Assyria. Assyria had conquered nation after nation. But Isaiah declares their downfall will come not in the strength of men, but the arm of God. This occurred when the angel of the Lord struck the Assyrian army, killing 185,000 soldiers in one night (Isaiah 37:36).
“His rock will pass away because of panic.” The rock likely refers to the king of Assyria and the assumed strength of their empire. What appeared immovable would suddenly be crushed.
The chapter ends with a striking statement about Jerusalem: “Whose fire is in Zion and whose furnace is in Jerusalem.” God dwells in Zion. His presence protects His people consuming His enemies.Jerusalem is where God reveals His mercy and judgment.
Isaiah reminds them that no human power can replace trust in God. This is a timeless truth. Nations, churches, and individuals often rely on resources, influence, or strategy rather than seeking the Lord. The chapter emphasizes that the Lord Himself fights for His people. The defeat of Assyria demonstrated that Israel’s security ultimately rests not in armies but in the sovereign power of God.
God’s promise of protection is connected to a call to return to Him and reject idols. Deliverance begins with repentance.
Isaiah is rebukes Judah and King Hezekiah because they were reacting politically and emotionally instead of resting spiritually. Peace in trouble times means not rushing to defend yourself out of fear or trying to control outcomes but settling your heart before the Lord first. Before deciding whether to speak, the first question is: Am I at rest in God, or reacting in anxiety?
There are times to be silent: Ex. 14:14 – “The Lord will fight for you; you need only to be still” Prov. 26:4 – Do not answer a fool according to his folly and Jesus before Pilate (Matthew 27:12–14) – silent while being falsely accused.
There are times to speak: Prov 26:5 – Answer a fool according to his folly, Acts 4:19–20 – “We cannot but speak…” Paul regularly defended the gospel and his ministry Knowing when calls for discernment and the leading of God’s Spirit.
The wisdom that allows us to know when silence is called or speaking comes from God’s Spirit and His Word. “All Scripture is inspired by God and profitable for teaching, for reproof, for correction, for training in righteousness; so that the man of God may be adequate, equipped for every good work” 2 Tim. 3:16-17.
