The Bible tells us that we are to always be ready for our Lord, while we will not know when this will be we can be certain that the day will come.
Therefore keep watch, because you do not know on what day your Lord will come. Matthew 24:42 NIV
I often think that this applies to my own behavior throughout the day, such as am I being faithful in my thoughts and actions? If I were to meet the Lord right now would I be able to hold my head up? I like to think that when the Lord knocks at my door I will be right there as a faithful servant, with a lamp in hand, and open the door wide exclaiming “welcome home my Lord, all is ready for you”. We all have a most precious citizenship in heaven and while we eagerly await our Savior, the Lord Jesus Christ, we should keep watch that we don’t stumble on earthly things.