Contradiction with Isaiah 6:9-10
These verses express God’s intention to keep the people blind and deaf to understanding, while Isaiah 25:7 speaks of removing the covering over all people.
Isaiah 6:9-10: And he said, Go, and tell this people, Hear ye indeed, but understand not; and see ye indeed, but perceive not. [indeed, but understand: or, without ceasing, etc: Heb. in hearing, etc]
Contradiction with John 12:40
This verse mentions God blinding eyes and hardening hearts to prevent seeing and understanding, contradicting the removal of blinding in Isaiah 25:7.
John 12:40: He hath blinded their eyes, and hardened their heart; that they should not see with [their] eyes, nor understand with [their] heart, and be converted, and I should heal them.
Contradiction with Romans 11:8
Here, God is said to have given a spirit of slumber and closed eyes, whereas Isaiah 25:7 indicates a removal of such impediments.
Romans 11:8: (According as it is written, God hath given them the spirit of slumber, eyes that they should not see, and ears that they should not hear;) unto this day. [slumber: or, remorse]
Contradiction with 2 Thessalonians 2:11
This verse talks about God sending a strong delusion, opposing the notion in Isaiah 25:7 of removing obstructions to understanding.
2 Thessalonians 2:11: And for this cause God shall send them strong delusion, that they should believe a lie: