Contradiction with Proverbs 18:21
Whereas Psalms 39:3 speaks of the impact of meditating and speaking, Proverbs 18:21 emphasizes the power and necessity of the tongue, implying it should not be restrained.
Proverbs 18:21: Death and life [are] in the power of the tongue: and they that love it shall eat the fruit thereof.
Contradiction with Proverbs 15:2
Psalms 39:3 involves deliberate silence and withholding speech, while Proverbs 15:2 highlights that the tongue of the wise does use knowledge appropriately, which may require speaking out.
Proverbs 15:2: The tongue of the wise useth knowledge aright: but the mouth of fools poureth out foolishness. [poureth: Heb. belcheth, or, bubbleth]
Contradiction with James 3:5-6
Psalms 39:3 describes controlled speech, yet James 3:5-6 warns against the tongue's potential to cause havoc, suggesting regulation but highlighting its innate power.
James 3:5-6: 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]