Verses with the word doer in the New Testament (4 verses):

2 Timothy 2:9
Wherein I suffer trouble, as an evil doer, even unto bonds; but the word of God is not bound.

James 1:23
For if any be a hearer of the word, and not a doer, he is like unto a man beholding his natural face in a glass:

James 1:25
But whoso looketh into the perfect law of liberty, and continueth therein, he being not a forgetful hearer, but a doer of the work, this man shall be blessed in his deed.

James 4:11
Speak not evil one of another, brethren. He that speaketh evil of his brother, and judgeth his brother, speaketh evil of the law, and judgeth the law: but if thou judge the law, thou art not a doer of the law, but a judge.