Contradiction with Psalms 109:17
This verse, which talks about delighting not in blessing, contrasts with God's mercy being both abundant and heavenly.
Psalms 109:17: As he loved cursing, so let it come unto him: as he delighted not in blessing, so let it be far from him.
Contradiction with Exodus 34:7
Here, God is described as forgiving but also punishing, which could be seen as a contrast to the unbounded mercy described in Psalms 57:10.
Exodus 34:7: Keeping mercy for thousands, forgiving iniquity and transgression and sin, and that will by no means clear [the guilty]; visiting the iniquity of the fathers upon the children, and upon the children's children, unto the third and to the fourth [generation].
Contradiction with Isaiah 57:11
This verse talks about God holding back punishment for silence, offering a more complex view of mercy and truth than the simple greatness described in Psalms 57:10.
Isaiah 57:11: And of whom hast thou been afraid or feared, that thou hast lied, and hast not remembered me, nor laid [it] to thy heart? have not I held my peace even of old, and thou fearest me not?
Contradiction with Jeremiah 30:11
Although God promises restoration, this verse includes the notion of punishment and correction, which could be seen as contradicting unyielding mercy.
Jeremiah 30:11: For I [am] with thee, saith the LORD, to save thee: though I make a full end of all nations whither I have scattered thee, yet will I not make a full end of thee: but I will correct thee in measure, and will not leave thee altogether unpunished.