Contradiction with Matthew 6:8
This verse notes that God knows your needs before you ask, which contrasts with the idea in Isaiah 43:26 where the expectation is to engage in dialogue and remind God.
Matthew 6:8: Be not ye therefore like unto them: for your Father knoweth what things ye have need of, before ye ask him.
Contradiction with Romans 11:34
Suggests that no one can counsel or instruct God, while Isaiah 43:26 encourages presenting a case, implying a form of counsel.
Romans 11:34: For who hath known the mind of the Lord? or who hath been his counsellor?
Contradiction with Job 9:14-15
Emphasizes human inability to contend with God, which is in contrast to Isaiah 43:26's invitation to reason and present an argument.
Job 9:14-15: How much less shall I answer him, [and] choose out my words [to reason] with him?
Contradiction with Psalm 139:4
Indicates that God knows everything we will say, contradicting the notion of needing to bring Him into remembrance as in Isaiah 43:26.
Psalm 139:4: For [there is] not a word in my tongue, [but], lo, O LORD, thou knowest it altogether.