Contradiction with Proverbs 12:25
Job 16:6 talks about speaking not easing pain, while Proverbs 12:25 suggests a good word can make a heart glad.
Proverbs 12:25: Heaviness in the heart of man maketh it stoop: but a good word maketh it glad.
Contradiction with Proverbs 15:23
Job 16:6 implies speaking does not help his grief, but Proverbs 15:23 states that a word spoken in due season can bring joy.
Proverbs 15:23: A man hath joy by the answer of his mouth: and a word [spoken] in due season, how good [is it]! [due...: Heb. his season]
Contradiction with Proverbs 16:24
Job 16:6 indicates no relief from speech, yet Proverbs 16:24 highlights pleasant words as sweet and health-giving.
Proverbs 16:24: Pleasant words [are as] an honeycomb, sweet to the soul, and health to the bones.
Contradiction with Proverbs 17:22
Job 16:6 suggests lack of comfort from speech, but Proverbs 17:22 claims a merry heart works like medicine.
Proverbs 17:22: A merry heart doeth good [like] a medicine: but a broken spirit drieth the bones. [like: or, to]
Contradiction with James 3:5
Job 16:6 implies his words have no impact, whereas James 3:5 demonstrates the powerful effects of the tongue.
James 3:5: Even so the tongue is a little member, and boasteth great things. Behold, how great a matter a little fire kindleth! [a matter: or, wood]
Contradiction with Ephesians 4:29
Job 16:6 notes no solace from words, yet Ephesians 4:29 encourages speech that imparts grace and edification.
Ephesians 4:29: Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers. [to...: or, to edify profitably]