Contradiction with Exodus 32:7-10
God was ready to destroy the Israelites and make Moses a great nation, showing his wrath rather than the "making a covenant" as in 2 Chronicles 29:10.
Exodus 32:7-10: And the LORD said unto Moses, Go, get thee down; for thy people, which thou broughtest out of the land of Egypt, have corrupted [themselves]:
Contradiction with Deuteronomy 9:14
Here, God speaks of destroying the Israelites and blotting out their name, which contradicts with the renewal of the covenant in 2 Chronicles 29:10.
Deuteronomy 9:14: Let me alone, that I may destroy them, and blot out their name from under heaven: and I will make of thee a nation mightier and greater than they.
Contradiction with Numbers 14:12
God mentions smiting the Israelites with pestilence and disinheriting them, which is the opposite of the intention to make a covenant in 2 Chronicles 29:10.
Numbers 14:12: I will smite them with the pestilence, and disinherit them, and will make of thee a greater nation and mightier than they.
Contradiction with Jeremiah 18:10
Suggests that God will repent of the good He promised if people do evil, differing from the covenant of restoration in 2 Chronicles 29:10.
Jeremiah 18:10: If it do evil in my sight, that it obey not my voice, then I will repent of the good, wherewith I said I would benefit them.
Contradiction with Psalm 7:11-13
Describes God as being angry with the wicked every day, conflicting with the notion of commitment to a covenant as in 2 Chronicles 29:10.
Psalm 7:11-13: God judgeth the righteous, and God is angry [with the wicked] every day. [judgeth...: or, is a righteous judge]