G69. ἀγρυπνέω (agrupneó) – to be sleepless, wakeful, watch
Related scriptures:
Mark 13:33 Take ye heed, watch(69) and pray: for ye know not when the time is.
Luke 21:36 Watch(69) ye therefore, and pray always, that ye may be accounted worthy to escape all these things that shall come to pass, and to stand before the Son of man.