Contradiction with Psalm 30:5
This verse suggests that God's anger only lasts for a moment and favor is more enduring, contradicting the prolonged desolation mentioned in Isaiah 6:11.
Psalm 30:5: For his anger [endureth but] a moment; in his favour [is] life: weeping may endure for a night, but joy [cometh] in the morning. [his anger...: Heb. there is but a moment in his anger] [for a night: Heb. in the evening] [joy: Heb. singing]
Contradiction with Jonah 3:10
This verse shows that God can relent from sending destruction if people repent, contrasting with the seemingly inevitable judgment in Isaiah 6:11.
Jonah 3:10: And God saw their works, that they turned from their evil way; and God repented of the evil, that he had said that he would do unto them; and he did [it] not.
Contradiction with Ezekiel 18:23
This verse indicates that God does not take pleasure in the death of the wicked, which contradicts the sense of prolonged judgment and desolation in Isaiah 6:11.
Ezekiel 18:23: Have I any pleasure at all that the wicked should die? saith the Lord GOD: [and] not that he should return from his ways, and live?
Contradiction with 2 Peter 3:9
It states that God is patient and not wanting anyone to perish, contradicting the idea of extended desolation in Isaiah 6:11.
2 Peter 3:9: The Lord is not slack concerning his promise, as some men count slackness; but is longsuffering to us-ward, not willing that any should perish, but that all should come to repentance.
Contradiction with Jeremiah 18:7-8
These verses suggest that God may avert disaster if a nation repents, in contrast to the inevitable desolation described in Isaiah 6:11.
Jeremiah 18:7-8: [At what] instant I shall speak concerning a nation, and concerning a kingdom, to pluck up, and to pull down, and to destroy [it];