Contradiction with Exodus 20:3
This verse commands the worship of no other gods, while Isaiah 46:1 mentions false gods Bel and Nebo being powerless and falling.
Exodus 20:3: Thou shalt have no other gods before me.
Contradiction with Isaiah 45:5
States there is no other God besides the Lord, contradicting Isaiah 46:1 which depicts false gods.
Isaiah 45:5: I [am] the LORD, and [there is] none else, [there is] no God beside me: I girded thee, though thou hast not known me:
Contradiction with Isaiah 44:6
Says there is no God besides the Lord, contradicting the existence of Bel and Nebo in Isaiah 46:1.
Isaiah 44:6: Thus saith the LORD the King of Israel, and his redeemer the LORD of hosts; I [am] the first, and I [am] the last; and beside me [there is] no God.
Contradiction with Deuteronomy 6:4
Affirms the Lord is one, in contrast to Isaiah 46:1 mentioning other gods like Bel and Nebo.
Deuteronomy 6:4: Hear, O Israel: The LORD our God [is] one LORD:
Contradiction with Jeremiah 10:11
Declares all other gods will perish, which is reflected in Isaiah 46:1 depicting the fall of Bel and Nebo.
Jeremiah 10:11: Thus shall ye say unto them, The gods that have not made the heavens and the earth, [even] they shall perish from the earth, and from under these heavens.