'Useless' in the Bible

Stop bringing useless offerings.Your incense is detestable to Me.New Moons and Sabbaths,and the calling of solemn assemblies—I cannot stand iniquity with a festival.

to Egypt, which gives help that is worthless and useless. Therefore I call her, "Rahab, who just sits still.'"

So will My word be which goes out of My mouth;It will not return to Me void (useless, without result),Without accomplishing what I desire,And without succeeding in the matter for which I sent it.