'Empty Words' in the Bible

But I have sent the brothers [See 8:18, 22], so that our boasting about you being prepared will not prove to be empty words.

Let no man deceive you with empty words: for because of these things cometh the wrath of God upon the sons of disobedience.

From these some have drifted away, and have wandered into empty words.

O Timothy, keep the trust, turning away from profane and empty words, and contradictions of mis-named science,

{For by speaking high-sounding but empty words}, they entice with desires of the flesh [and] with licentiousness those who are scarcely escaping from those who live in error,