Contradiction with Proverbs 15:29
The verse states that the Lord is far from the wicked, which contradicts Psalms 108:4's emphasis on God's mercy being great and encompassing.
Proverbs 15:29: The LORD [is] far from the wicked: but he heareth the prayer of the righteous.
Contradiction with 2 Chronicles 30:9
Indicates that the Lord is gracious and merciful if you return to Him, suggesting a condition which opposes the unconditional aspect of Psalms 108:4's mercy and truth.
2 Chronicles 30:9: For if ye turn again unto the LORD, your brethren and your children [shall find] compassion before them that lead them captive, so that they shall come again into this land: for the LORD your God [is] gracious and merciful, and will not turn away [his] face from you, if ye return unto him.