'Alert' in the Bible

Watch out! Stay alert! For you do not know when the time will come.

It is like a man going on a journey. He left his house and put his slaves in charge, assigning to each his work, and commanded the doorkeeper to stay alert.

Stay alert, then, because you do not know when the owner of the house will return -- whether during evening, at midnight, when the rooster crows, or at dawn --

What I say to you I say to everyone: Stay alert!"

He said to them, "My soul is deeply grieved, even to the point of death. Remain here and stay alert."