JMNT(i)
15 I have seen, and thus know (am aware of) your [singular] works (acts), that you are (continue being) neither cold nor boiling hot (or: zealous): O that you were being cold, or boiling hot (zealous)!
16 Thus, because you continue being lukewarm (tepid), and are neither boiling hot nor cold, I am about to vomit you out of My mouth.
17 Because your are habitually saying, "I am rich and have acquired wealth and continuously have need of nothing, " and you have not seen to know (or: are not aware) that you continue being wretched (or: miserable; in hardship) and pitiful and poor and blind and naked,