'Doer' in the Bible

because, if any one is a hearer of the word and not a doer, this one hath been like to a man viewing his natural face in a mirror,

and he who did look into the perfect law -- that of liberty, and did continue there, this one -- not a forgetful hearer becoming, but a doer of work -- this one shall be happy in his doing.

Speak not one against another, brethren; he who is speaking against a brother, and is judging his brother, doth speak against law, and doth judge law, and if law thou dost judge, thou art not a doer of law but a judge;