Contradiction with Psalm 22:1
This verse expresses a feeling of abandonment by God, which contrasts with the idea of God's everlasting mercy and truth in Psalms 100:5.
Psalm 22:1: [To the chief Musician upon Aijeleth Shahar, A Psalm of David.] My God, my God, why hast thou forsaken me? [why art thou so] far from helping me, [and from] the words of my roaring? [Aijeleth...: or, the hind of the morning] [helping...: Heb. my salvation]
Contradiction with Lamentations 3:8
Here, the speaker feels that God does not hear prayers, conflicting with the notion of God's enduring faithfulness in Psalms 100:5.
Lamentations 3:8: Also when I cry and shout, he shutteth out my prayer.
Contradiction with Job 30:20
Job expresses that God doesn't answer him, which contradicts the message of God's steadfast truth and mercy in Psalms 100:5.
Job 30:20: I cry unto thee, and thou dost not hear me: I stand up, and thou regardest me [not].