2 Peter 1:8-15 NRSV
For if these things are yours and are increasing among you, they keep you from being ineffective and unfruitful in the knowledge of our Lord Jesus Christ. For anyone who lacks these things is nearsighted and blind, and is forgetful of the cleansing of past sins. Therefore, brothers and sisters, be all the more eager to confirm your call and election, for if you do this, you will never stumble. For in this way, entry into the eternal kingdom of our Lord and Savior Jesus Christ will be richly provided for you.
Therefore I intend to keep on reminding you of these things, though you know them already and are established in the truth that has come to you. I think it right, as long as I am in this body, to refresh your memory, since I know that my death will come soon, as indeed our Lord Jesus Christ has 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.
NRSV: New Revised Standard Version