Contradiction with Ecclesiastes 3:1-8
These verses mention there is a time for everything, including silence, which could imply not always praising.
Ecclesiastes 3:1-8: To every [thing there is] a season, and a time to every purpose under the heaven:
Contradiction with Job 3:1-4
Job curses the day of his birth, suggesting moments not focused on praise.
Job 3:1-4: After this opened Job his mouth, and cursed his day.
Contradiction with Ecclesiastes 1:2
This verse states "all is vanity," which could be seen as contradicting continual praise.
Ecclesiastes 1:2: Vanity of vanities, saith the Preacher, vanity of vanities; all [is] vanity.
Contradiction with Psalm 22:1
David cries out feeling forsaken, seemingly contradicting a call to praise.
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]