Matthew 25:1-13
The Parable of the Ten Virgins, Five foolish and Five wise, ends with this conclusion:
(v. 13) Be on the alert then [therefore keep watch], for you do not know the day nor the hour.
This is a warning to be constantly on the alert, and to prepare for the coming of the Bridegroom.
These are the virgins, the friends of the Bride (we, the church, are the Bride), but their example to us is to be prepared ahead of time, before we see Him or hear Him call us from within the clouds. As His Bride, we will be called up to be with Him without warning, except to see all the "end times" happenings taking place all at the same time. We should recognize when it is near, maybe even the season, but we won't know the exact day or hour.
So we need to be preparing for Him every day, because He can be coming now any day.
Even so, come, Lord Jesus!
