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Isaiah 9:18 meaning

Wickedness allowed to flourish will multiply until it brings destruction to every aspect of life.

Isaiah warns of a scorching force that grows relentlessly, describing how For wickedness burns like a fire; It consumes briars and thorns; It even sets the forest thickets aflame And they roll upward in a column of smoke (v.18). The context is God’s rebuke against the sinful desires of His people, which spread swiftly and bring spiritual and physical devastation. Fire here often symbolizes divine judgment in Scripture, as when the LORD is called a “consuming fire” (Deuteronomy 4:24). The imagery of briars and thorns illustrates how sin thrives when left unchecked, overtaking everything in its path.

Though fire can be employed for refinement or provision, such as cooking or providing light, Isaiah’s usage underscores the destructive result of persistent rebellion. This burning of “briars and thorns” mirrors a spiritual process in which our sinful choices ultimately consume us. The rising “column of smoke” also appears in other biblical accounts as a symbol of judgment or the aftermath of God’s righteous wrath, similar to when the smoke of Sodom ascended like the smoke of a furnace (Genesis 19:27).

The prophet’s depiction of this raging conflagration serves as a call to repentance. Instead of letting our transgressions continue like a spreading fire, God desires that we turn from them before their disastrous consequences overwhelm us. As seen across the Old Testament, God’s warnings are woven with hope and the promise of restoration for those who humble themselves and seek righteousness.

Isaiah 9:18