Contradiction with Ecclesiastes 3:7
While Psalms 57:9 focuses on praising God among the people, Ecclesiastes 3:7 emphasizes that there is a time to keep silence, suggesting that there isn't always a time to speak or praise.
Ecclesiastes 3:7: A time to rend, and a time to sew; a time to keep silence, and a time to speak;
Contradiction with Matthew 6:5
Psalms 57:9 speaks of praising God among the nations, but Matthew 6:5 warns against praying or making a display of religiosity just to be seen by others.
Matthew 6:5: And when thou prayest, thou shalt not be as the hypocrites [are]: for they love to pray standing in the synagogues and in the corners of the streets, that they may be seen of men. Verily I say unto you, They have their reward.
Contradiction with Isaiah 29:13
Psalms 57:9 speaks of sincere praise to God, whereas Isaiah 29:13 criticizes those who honor God with their lips while their hearts are far from Him.
Isaiah 29:13: Wherefore the Lord said, Forasmuch as this people draw near [me] with their mouth, and with their lips do honour me, but have removed their heart far from me, and their fear toward me is taught by the precept of men: