Contradiction with Isaiah 45:5
While Ezekiel 28:2 mentions a figure claiming to be a god, Isaiah 45:5 states explicitly that there is no God besides the Lord, contradicting such a claim.
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 Psalm 82:6-7
Ezekiel 28:2 involves someone declaring themselves a god, whereas Psalm 82:6-7 acknowledges such claims for humans but states they will die like men.
Psalm 82:6-7: I have said, Ye [are] gods; and all of you [are] children of the most High.
Contradiction with Deuteronomy 6:4
Ezekiel 28:2 involves a claim to divinity, contradicting Deuteronomy 6:4, which proclaims that the Lord alone is God.
Deuteronomy 6:4: Hear, O Israel: The LORD our God [is] one LORD:
Contradiction with Isaiah 43:10
Ezekiel 28:2 presents a figure asserting divinity, whereas Isaiah 43:10 declares that before and after God, no god was formed.
Isaiah 43:10: Ye [are] my witnesses, saith the LORD, and my servant whom I have chosen: that ye may know and believe me, and understand that I [am] he: before me there was no God formed, neither shall there be after me. [no...: or, nothing formed of God]
Contradiction with Exodus 20:3
The claim in Ezekiel 28:2 stands against Exodus 20:3, which commands that no other gods should be before the true God.
Exodus 20:3: Thou shalt have no other gods before me.