Contradiction with Proverbs 14:13
Psalms 86:4 speaks of rejoicing, while Proverbs 14:13 mentions that even in laughter the heart can ache.
Proverbs 14:13: Even in laughter the heart is sorrowful; and the end of that mirth [is] heaviness.
Contradiction with Ecclesiastes 7:3
While Psalms 86:4 talks about rejoicing the soul, Ecclesiastes 7:3 suggests sorrow is better than laughter.
Ecclesiastes 7:3: Sorrow [is] better than laughter: for by the sadness of the countenance the heart is made better. [Sorrow: or, Anger]
Contradiction with Lamentations 1:12
Psalms 86:4 involves joy for the soul, but Lamentations 1:12 highlights extreme sorrow and suffering.
Lamentations 1:12: [Is it] nothing to you, all ye that pass by? behold, and see if there be any sorrow like unto my sorrow, which is done unto me, wherewith the LORD hath afflicted [me] in the day of his fierce anger. [Is it...: or, It is nothing] [pass by: Heb. pass by the way?]
Contradiction with James 4:9
Psalms 86:4 seeks a joyful soul, whereas James 4:9 advises turning joy into gloom.
James 4:9: Be afflicted, and mourn, and weep: let your laughter be turned to mourning, and [your] joy to heaviness.
Contradiction with Luke 6:25
Psalms 86:4 is about the joy of the soul, contrasted by Luke 6:25 where those who laugh now will mourn.
Luke 6:25: Woe unto you that are full! for ye shall hunger. Woe unto you that laugh now! for ye shall mourn and weep.