Contradiction with Psalm 145:9
This verse states that the Lord is good to all and has compassion on all He has made, contradicting Isaiah 15:9's depiction of judgment and devastation.
Psalm 145:9: The LORD [is] good to all: and his tender mercies [are] over all his works.
Contradiction with Ezekiel 18:23
This conveys that the Lord takes no pleasure in the death of the wicked, contradicting the theme of destruction found in Isaiah 15:9.
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 1 John 4:8
Emphasizes that God is love, which contradicts the notion of divine wrath present in Isaiah 15:9.
1 John 4:8: He that loveth not knoweth not God; for God is love.