And he cometh, and findeth them sleeping, and saith unto Peter, Simon, sleepest thou? couldest thou not watch one hour?

Couldest thou not watch one hour? Watch and pray, lest ye enter into temptation; the spirit indeed is willing, but the flesh is weak.

And he saw them toiling in rowing; for the wind was contrary unto them: and about the fourth watch of the night he cometh unto them, walking upon the sea, and would have passed by them.

So you are to keep watch: because you are not certain when the master of the house is coming, in the evening, or in the middle of the night, or at the cock's cry, or in the morning;