Contradiction with Isaiah 55:8-9
These verses emphasize that God's ways and thoughts are above human understanding, suggesting a different perspective from the accessible understanding of God implied in Psalms 77:13.
Isaiah 55:8-9: For my thoughts [are] not your thoughts, neither [are] your ways my ways, saith the LORD.
Contradiction with Romans 11:33
This verse marvels at the depth of God's wisdom and knowledge, which contrasts with the idea in Psalms 77:13 of God's ways being clearly known.
Romans 11:33: O the depth of the riches both of the wisdom and knowledge of God! how unsearchable [are] his judgments, and his ways past finding out!