'Doer' in the Bible

For if any man be a hearer of the word and not a doer, he is like to a man considering his natural face in a mirror:

But he that fixes his view on the perfect law, that of liberty, and abides in it, being not a forgetful hearer but a doer of the work, he shall be blessed in his doing.

Speak not against one another, brethren. He that speaks against his brother, or judges his brother, speaks against the law and judges the law. But if thou judgest the law, thou art not doer of the law, but judge.