Contradiction with Job 30:20
While Psalms 30:8 shows God hearing the cry for mercy, in this verse, Job complains that God does not hear when he cries out.
Job 30:20: I cry unto thee, and thou dost not hear me: I stand up, and thou regardest me [not].
Contradiction with Psalms 22:2
This verse speaks of crying out by day and night, claiming God does not answer, unlike the hopeful plea in Psalms 30:8.
Psalms 22:2: O my God, I cry in the daytime, but thou hearest not; and in the night season, and am not silent. [am...: Heb. there is no silence to me]
Contradiction with Isaiah 1:15
Here God says He will not listen to their prayers, which contrasts with the implication in Psalms 30:8 of a responsive God when called upon.
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 Lamentations 3:8
This verse suggests God ignores pleas and shuts out prayers, differing from Psalms 30:8's open line of communication with God.
Lamentations 3:8: Also when I cry and shout, he shutteth out my prayer.