'Meaningless' in the Bible

If you yourselves have all seen this, Why in the world do you continue this meaningless talk?

So I thought to myself, "The fate of the fool will happen even to me! Then what did I gain by becoming so excessively wise?" So I lamented to myself, "The benefits of wisdom are ultimately meaningless!"

Do not bring any more meaningless offerings; I consider your incense detestable! You observe new moon festivals, Sabbaths, and convocations, but I cannot tolerate sin-stained celebrations!

Indeed, they will hear meaningless gibberish, senseless babbling, a syllable here, a syllable there.

So the Lord's word to them will sound like meaningless gibberish, senseless babbling, a syllable here, a syllable there. As a result, they will fall on their backsides when they try to walk, and be injured, ensnared, and captured.