Most Relevant Verses
Of these things put them in remembrance, charging them before the Lord that they strive not about words to no profit, but to the subverting of the hearers.
But I say unto you, That every idle word that men shall speak, they shall give account thereof in the day of judgment.
But avoid foolish questions, and genealogies, and contentions, and strivings about the law; for they are unprofitable and vain.
Topics on Useless Words
Thou shalt not take the name of the LORD thy God in vain; for the LORD will not hold him guiltless that taketh his name in vain.
More Verses on Useless Words
For when they speak great swelling words of vanity, they allure through the lusts of the flesh, through much wantonness, those that were clean escaped from them who live in error.