Ecclesiastes 8:7

So be ready yourselves, for the Son of man is coming at an hour you do not expect.

that servant's lord and master will arrive on a day when he does not expect him and at an hour which he does not know;

But at midnight the cry arose, 'Here is the bridegroom! Come out to meet him!'

As regards the course and periods of time, brothers, you have no need of being written to.

Treasury of Scripture Knowledge

For he knoweth not that which shall be: for who can tell him when it shall be?

So be ready yourselves, for the Son of man is coming at an hour you do not expect.

But at midnight the cry arose, 'Here is the bridegroom! Come out to meet him!'

As regards the course and periods of time, brothers, you have no need of being written to.