'Doer' in the Bible

Because if anyone is a hearer of the word and not a doer, he is like a man looking at his own face in a mirror.

But the one who looks intently into the perfect law of freedom and perseveres in it, and is not a forgetful hearer but one who does good works—this person will be blessed in what he does.

Don’t criticize one another, brothers. He who criticizes a brother or judges his brother criticizes the law and judges the law. But if you judge the law, you are not a doer of the law but a judge.