If anyone thinks that he is religious, while he bridles not his own tongue, but deceives his own heart, this man's religion is vain.

But are you willing to know, O vain man, that faith apart from works is worthless?

My brethren, can a fig tree produce olives; or a vine, figs? Neither can salt water yield sweet.

Or do ye think that the Scripture says in vain, "The spirit that dwells in us has jealous longings?"