Contradiction with Proverbs 3:5
This verse advises trusting in the Lord with all your heart and not leaning on your understanding, which could be seen as contradictory if Jehoshaphat's actions in 2 Chronicles 20:5 are interpreted as relying on a public assembly rather than immediate personal trust in God.
Proverbs 3:5: Trust in the LORD with all thine heart; and lean not unto thine own understanding.
Contradiction with Isaiah 55:8-9
These verses emphasize that God's thoughts and ways are higher than human ways, potentially contradicting acts of assembling people for counsel as seen in 2 Chronicles 20:5 instead of relying solely on God's guidance.
Isaiah 55:8-9: For my thoughts [are] not your thoughts, neither [are] your ways my ways, saith the LORD.