The verse begins with a humorous word, the "woe" having the feeling of "oy vey" in Yiddish, and possibly the historical source of the word. The final Greek word translated here is the punchline, and a word Jesus only uses once. It is translated as "uncleanness" and "unclean," but describes the "foulness" of a wound, generally meaning "filth," and, in moral sense, "depravity." This word connects with the "rotten meat" idea describing the inside of the platter in Matthew 23:25. Literally, it means  "not pure," or "impurity," which I suspect had sexual connotations.

There are other double meanings here as well. The word translated as "whitened" actually means "plastered" or "painted" but it has the double meaning of "disguised." The word translated as "beautiful" primarily has the sense of "fresh," but a lot of double meanings as well, including "ripe for death" when applied to old people.  The word translated as "dead" means "corpses," "the dying" and "inanimate objects."

This verse continues the patterns we have seen in this section. Other than the humorous pattern of repeated phrases, in the most recent part, we see a pattern contrasting the "inward and "outward" starting at Matthew 23:25, before the, the large and small, before that, the earthly and spiritual. However, in a larger sense, everything goes back to the earthly and spiritual, where the earthly is temporary and eventually rots.