2 Peter 1:12-15

12 Therefore I will not be negligent to remind you of these things, though you know them, and are established in the present truth.  13 I think it right, as long as I am in this tent, to stir you up by reminding you;  14 knowing that the putting off of my tent comes swiftly, even as our Lord Jesus Christ made clear to me.  15 Yes, I will make every effort that you may always be able to remember these things even after my departure.