1 Thessalonians 5:6

6Soἄραthenοὖνnotμὴwe should sleepκαθεύδωμενasὡςtheοἱothersλοιποί,butἀλλὰwe should watchγρηγορῶμενandκαὶwe should be soberνήφωμεν.

So then, we should not sleep as the rest, but we should watch and we should be sober.