'Doer' in the Bible

For if anyone only listens to the word without obeying it, he is like a man who looks very carefully at his natural face in a mirror;

But he who looks carefully into the perfect law, the law of liberty, and faithfully abides by it, not having become a [careless] listener who forgets but an active doer [who obeys], he will be blessed and favored by God in what he does [in his life of obedience].