γρηγορέω

A. to be or become fully awake, watch, LXX Ne. 7.3, Ev.Matt. 24.43, al., Ach.Tat. 4.17; ἐπί τισι LXX Ba. 2.9; ἐπὶ τὰς πόλεις ib.Je. 5.6:—Pass., ἐγρηγορήθη ἐπὶ τὰ ἀσεβήματά μου ib.La. 1.14; opp. καθεύδω, of life opp. death, 1 Ep.Thess. 5.10.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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