'Futile' in the Bible

Give us help against [the] adversary, for the help of humankind [is] futile.

Give us help against [the] enemy, for the help of humankind [is] futile.

For [although they] knew God, they did not honor [him] as God or give thanks, but they became futile in their reasoning, and their senseless hearts were darkened.

and again, "The Lord knows the thoughts of the wise, that they are futile."

[because you] know that you were redeemed from your futile way of life inherited from your ancestors not with perishable things like silver or gold,