Matthew 25:13

“Watch therefore, for you do not know the day nor the hour.”

And then Jesus applies the main lesson of the Parable. All must watch in full preparedness so that they will be ready for His coming, for they do not know the day or the hour when He will come (compare Matthew 24:36; Matthew 24:42; Matthew 24:44; Matthew 24:50). And watching does not just mean ‘looking out’, it involves being ready and fully prepared.