JMNT(i)
42 "Therefore, you folks stay constantly awake, be ever alert, and continue watchful, because you have not seen, nor do you thus know, in what sort of day your Owner (Lord) is in the habit of coming (or: for what kind of day your Master repeatedly comes).
43 "Yet you are progressively coming to know that by experience (or, as an imperative: Now be personally knowing that, through normal experience), because if the householder had seen and known in what sort of watch (= which of the watches) [of the night] the thief is normally coming, he would have kept awake, remained alert and kept watchful, and then he would not let (permit) his house to be dug (or: tunneled) through.
44 "Because of this, you yourselves progressively come to be ready and prepared as well, because at an hour for (= about) which you are not normally thinking (imagining; supposing; = expecting), the Son of the Man (= the eschatological Messiah figure; humanity's son) is normally (or: repeatedly) coming.