'Uselessly' in the Bible

I, in turn, will do this to you: I will appoint over you a sudden terror, consumption and fever that will waste away the eyes and cause the soul to pine away; also, you will sow your seed uselessly, for your enemies will eat it up.

Your strength will be spent uselessly, for your land will not yield its produce and the trees of the land will not yield their fruit.

Job uselessly opens his mouthAnd multiplies words without knowledge [drawing the worthless conclusion that the righteous have no more advantage than the wicked].”

Unless the LORD builds the house, its builders labor uselessly. Unless the LORD guards the city, its security forces keep watch uselessly.

“Oh that there were one among you who would shut the gates, that you might not uselessly kindle fire on My altar! I am not pleased with you,” says the Lord of hosts, “nor will I accept an offering from you.

‘But in vain do they worship Me,For they teach as doctrines the precepts of men.’”