Contradiction with 1 Samuel 13:13
Saul's disobedience in leadership contrasts with the faithful workmen in 2 Chronicles 34:12.
1 Samuel 13:13: And Samuel said to Saul, Thou hast done foolishly: thou hast not kept the commandment of the LORD thy God, which he commanded thee: for now would the LORD have established thy kingdom upon Israel for ever.
Contradiction with 1 Kings 11:11
God's anger at Solomon for not keeping His covenant contradicts the obedience seen in 2 Chronicles 34:12.
1 Kings 11:11: Wherefore the LORD said unto Solomon, Forasmuch as this is done of thee, and thou hast not kept my covenant and my statutes, which I have commanded thee, I will surely rend the kingdom from thee, and will give it to thy servant. [is done...: Heb. is with thee]
Contradiction with Proverbs 14:23
"In all labour there is profit" implies a broader principle, unlike the specific successful work in 2 Chronicles 34:12.
Proverbs 14:23: In all labour there is profit: but the talk of the lips [tendeth] only to penury.
Contradiction with Isaiah 5:12
The neglect of the work of the Lord contrasts with the diligent work in 2 Chronicles 34:12.
Isaiah 5:12: And the harp, and the viol, the tabret, and pipe, and wine, are in their feasts: but they regard not the work of the LORD, neither consider the operation of his hands.
Contradiction with Jeremiah 48:10
"Cursed be he that doeth the work of the LORD deceitfully," which differs from the faithful execution in 2 Chronicles 34:12.
Jeremiah 48:10: Cursed [be] he that doeth the work of the LORD deceitfully, and cursed [be] he that keepeth back his sword from blood. [deceitfully: or, negligently]