Contradiction with Jeremiah 17:5
While 2 Chronicles 26:5 suggests prosperity comes from seeking God, Jeremiah 17:5 warns against trusting in man instead of God.
Jeremiah 17:5: Thus saith the LORD; Cursed [be] the man that trusteth in man, and maketh flesh his arm, and whose heart departeth from the LORD.
Contradiction with Proverbs 14:12
2 Chronicles 26:5 emphasizes seeking God, whereas Proverbs 14:12 highlights the danger of following a seemingly right path without God's guidance.
Proverbs 14:12: There is a way which seemeth right unto a man, but the end thereof [are] the ways of death.