Contradiction with Proverbs 28:9
While Psalms 69:33 states that God hears the needy, Proverbs 28:9 asserts that those who turn away from the law will have their prayer seen as abomination.
Proverbs 28:9: He that turneth away his ear from hearing the law, even his prayer [shall be] abomination.
Contradiction with Proverbs 21:13
Psalms 69:33 mentions God hears those in need, but Proverbs 21:13 states that those who ignore others' cries will not be heard themselves.
Proverbs 21:13: Whoso stoppeth his ears at the cry of the poor, he also shall cry himself, but shall not be heard.
Contradiction with Isaiah 59:2
Psalms 69:33 affirms God's attentiveness to the needy, whereas Isaiah 59:2 indicates that sin can separate one from God, preventing Him from hearing.
Isaiah 59:2: But your iniquities have separated between you and your God, and your sins have hid [his] face from you, that he will not hear. [have hid: or, have made him hide]
Contradiction with John 9:31
Psalms 69:33 speaks of God listening to the needy, yet John 9:31 suggests God does not hear sinners, except those who worship Him.
John 9:31: Now we know that God heareth not sinners: but if any man be a worshipper of God, and doeth his will, him he heareth.