Contradiction with Isaiah 40:29
Isaiah 10:16 speaks of God sending leanness among the strong, whereas Isaiah 40:29 highlights God's power to give strength and empower the weak.
Isaiah 40:29: He giveth power to the faint; and to [them that have] no might he increaseth strength.
Contradiction with Psalm 46:1
Isaiah 10:16 suggests God weakening the strong, while Psalm 46:1 describes God as a refuge and strength, supportive in times of trouble.
Psalm 46:1: [To the chief Musician for the sons of Korah, A Song upon Alamoth.] God [is] our refuge and strength, a very present help in trouble. [for: or, of]
Contradiction with Isaiah 41:10
While Isaiah 10:16 discusses God reducing strength, Isaiah 41:10 reassures with God's promise to uphold and strengthen His people.
Isaiah 41:10: Fear thou not; for I [am] with thee: be not dismayed; for I [am] thy God: I will strengthen thee; yea, I will help thee; yea, I will uphold thee with the right hand of my righteousness.
Contradiction with Philippians 4:13
Isaiah 10:16 depicts a scenario of diminished strength, but Philippians 4:13 affirms that one can do all things through Christ who strengthens them.
Philippians 4:13: I can do all things through Christ which strengtheneth me.
Contradiction with 2 Corinthians 12:9
Isaiah 10:16 associates God with causing weakness, whereas 2 Corinthians 12:9 speaks of God's grace being sufficient and His power made perfect in weakness.
2 Corinthians 12:9: And he said unto me, My grace is sufficient for thee: for my strength is made perfect in weakness. Most gladly therefore will I rather glory in my infirmities, that the power of Christ may rest upon me.