And again, “The Lord knows that the thoughts of the wise are futile.” ¹ 

And if Christ has not been raised, then our preaching is futile and your faith is empty.

If someone thinks he is religious yet does not bridle his tongue, and so deceives his heart, his religion is futile.

For although they knew God, they did not glorify him as God or give him thanks, but they became futile in their thoughts and their senseless hearts ¹  were darkened.