'Meaningless' in the Bible

They rejected the LORD's statutes, the covenant that he had made with their ancestors, and his warnings that he gave them. They pursued meaninglessness and became meaningless themselves as they followed the lifestyles of the nations that surrounded them, a practice that the LORD had warned them not to do.

"When you are praying, don't say meaningless things like the unbelievers do, because they think they will be heard by being so wordy.

Do not let anyone deceive you with meaningless words, for it is because of these things that God becomes angry with those who disobey.