2 Peter 1:12-15 (ESV)
Therefore I intend always to remind you of these qualities, though you know them and are established in the truth that you have.  I think it right, as long as I am in this body, to stir you up by way of reminder,  since I know that the putting off of my body will be soon, as our Lord Jesus Christ made clear to me.  And I will make every effort so that after my departure you may be able at any time to recall these things.
Reminders are good. We all need them at times. So often so easy to forget. We daily need reminders not only of right and wrong, but also of the gospel, that our sins have been forgiven. Pastors could learn from this a bit. Sometimes it seems so futile, so much to do. So many out there that need to hear the gospel. Sometimes afraid to start something, not sure you are able to bring it to fruition. We never know how much time we have. We may have years, may have this afternoon. What we have is salvation and a commission from God to do his work. We may as well do it.
Luther said if he knew the end of the world would be tomorrow he would still plant a tree. Peter here takes the same sort of attitude. I know I don’t have long, but what of it, I’ll do what I have been given to do, stir you up to remember your gifts, to walk in the way, and to know that Jesus has died for your sins.
We do know the world does not have much time. We know that the Lord could come back at anytime, today tomorrow, or a thousand years or more, and yet we push one doing what he has given us to do, so that we are not found negligent on the last day.