Revelation 22:11 contains four parallel phrases, each containing a participle followed by its verb as an imperative together with the word still.
The first two phrases describe those who reject the absolutely reliable account of what shall soon occur (despite what they witness), while the last two phrases describe those who embrace this account of what shall be. The verse, in other words, brings the challenge of this paragraph to its completion, begging the reader to consider which group he belongs to.
11 Let the evildoer still do evil, and the filthy still be filthy, and the righteous still do right, and the holy still be holy.”