That they may do evil with both hands earnestly. — Literally, well. Dr. Benisch, in his Old Testament newly translated under the supervision of the Rev. the Chief Rabbi of the United Congregations of the British Empire (1852), avoids the oxymoron of doing “evil” “well” by translating the passage, “concerning the evil which their hands should amend,” which satisfactorily harmonises with the rest of the passage.
So they wrap it up. — Literally, twist it, and pervert the course of justice.