Contradiction with Proverbs 28:9
This verse suggests that ignoring God's law makes prayer detestable, whereas Psalm 84:8 assumes a God who hears prayers.
Proverbs 28:9: He that turneth away his ear from hearing the law, even his prayer [shall be] abomination.
Contradiction with Isaiah 59:2
This verse indicates that sin separates us from God so that He does not hear, in contrast to Psalm 84:8, which implies God is attentive to prayer.
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 James 4:3
This verse states that prayers can go unanswered due to wrong motives, contradicting the idea in Psalm 84:8 that implicitly suggests God hears and acts on prayers.
James 4:3: Ye ask, and receive not, because ye ask amiss, that ye may consume [it] upon your lusts. [lusts: or, pleasures]
Contradiction with John 9:31
This verse claims God does not listen to sinners, which contrasts with Psalm 84:8 where God listens.
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.
Contradiction with 1 John 5:14
This verse specifies that God hears only if we ask according to His will, which differs from the general request for God to hear in Psalm 84:8.
1 John 5:14: And this is the confidence that we have in him, that, if we ask any thing according to his will, he heareth us: [in: or, concerning]