Matthew 7:20 - Clarke's commentary and critical notes on the Bible

Wherefore by their fruits ye shall know them. Wherefore by their fruits, etc. - This truth is often repeated, because our eternal interests depend so much upon it. Not to have good fruit is to have evil: there can be no innocent sterility in the invisible tree of the heart. He that brings forth no fruit, and he that brings forth bad fruit, are both only fit for the fire.