Contradiction with Ezekiel 36:25
While Isaiah 4:4 speaks of cleansing by a spirit of judgment and burning, Ezekiel 36:25 describes a purification through clean water, not judgment or burning.
Ezekiel 36:25: Then will I sprinkle clean water upon you, and ye shall be clean: from all your filthiness, and from all your idols, will I cleanse you.
Contradiction with 1 John 1:7
This verse indicates cleansing through the blood of Jesus, which contrasts with Isaiah 4:4's depiction of cleansing through a spirit of judgment and burning.
1 John 1:7: But if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin.
Contradiction with Hebrews 9:22
It states that almost all things are purged by blood, contradicting Isaiah 4:4's method of cleansing by a spirit of judgment and burning.
Hebrews 9:22: And almost all things are by the law purged with blood; and without shedding of blood is no remission.