Matthew 24:42-44 NIV

[42] “Therefore keep watch, because you do not know on what day your Lord will come. [43] But understand this: If the owner of the house had known at what time of night the thief was coming, he would have kept watch and would not have let his house be broken into. [44] So you also must be ready, because the Son of Man will come at an hour when you do not expect him.