Contradiction with Proverbs 28:9
While Psalms 34:17 suggests the Lord hears the righteous, Proverbs 28:9 indicates that if one turns away from hearing the law, even their prayer is an abomination, implying prayers may not be heard.
Proverbs 28:9: He that turneth away his ear from hearing the law, even his prayer [shall be] abomination.
Contradiction with Isaiah 1:15
Contradicts Psalms 34:17's promise that the Lord hears the righteous by stating that God will hide His eyes and not listen when hands are full of blood, suggesting circumstances where prayers are not heard.
Isaiah 1:15: And when ye spread forth your hands, I will hide mine eyes from you: yea, when ye make many prayers, I will not hear: your hands are full of blood. [make...: Heb. multiply prayer] [blood: Heb. bloods]
Contradiction with Micah 3:4
States that God will not hear the cries of evildoers, implying that not all cries are heard, which contrasts with the assurance given in Psalms 34:17 about delivering the righteous from troubles.
Micah 3:4: Then shall they cry unto the LORD, but he will not hear them: he will even hide his face from them at that time, as they have behaved themselves ill in their doings.
Contradiction with Hebrews 5:7
Although indicating that Christ's prayers were heard because of his piety, it suggests that not all prayers of the suffering are heard unless specific righteousness is demonstrated, which nuances the assertion in Psalms 34:17 about the Lord hearing cries.
Hebrews 5:7: Who in the days of his flesh, when he had offered up prayers and supplications with strong crying and tears unto him that was able to save him from death, and was heard in that he feared; [in that...: or, for his piety]
Paradox #1
Some people may see a contradiction between this idea and the real-life experience where prayers for help sometimes seem unanswered. It raises questions about why some people continue to suffer despite their faith or good actions.