Contradiction with Job 21:7
Job 21:7 questions why the wicked live, become old, and grow mighty in power, suggesting a contradiction to Psalms 84:12 which emphasizes trust in the Lord as a source of blessing, while the wicked seem to prosper without it.
Job 21:7: Wherefore do the wicked live, become old, yea, are mighty in power?
Contradiction with Ecclesiastes 7:15
Ecclesiastes 7:15 observes that a just man perishes in his righteousness, whereas a wicked man prolongs his life in wickedness, conflicting with Psalms 84:12's implication of blessings for those who trust in the Lord.
Ecclesiastes 7:15: All [things] have I seen in the days of my vanity: there is a just [man] that perisheth in his righteousness, and there is a wicked [man] that prolongeth [his life] in his wickedness.
Contradiction with Jeremiah 12:1
Jeremiah 12:1 expresses frustration with the prosperity of the wicked, questioning why those who deal treacherously are at ease, contradicting the idea in Psalms 84:12 of blessings being for those who trust God.
Jeremiah 12:1: Righteous [art] thou, O LORD, when I plead with thee: yet let me talk with thee of [thy] judgments: Wherefore doth the way of the wicked prosper? [wherefore] are all they happy that deal very treacherously? [talk...: or, reason the case with thee]