'Works of the Law' in the Bible

yet knowing that a man is not justified by the works of the law, but by faith in Jesus Christ, even we have believed in Christ Jesus, that we might be justified by faith in him, and not by the works of the law, by which there is no justification.

this one thing I desire to know of you, did you receive the spirit by the works of the law, or by the gospel preach'd to you?

if it be in vain. he therefore that ministreth the spirit to you, and worketh miracles among you, doth he it by the works of the law, or by the preaching of faith?

but they that rest themselves upon the works of the law, are obnoxious to the curse: for it is written, " cursed is every one, who continueth not in all things, which are written in the book of the law, to do them:"