"For anyone who lacks these things is nearsighted and blind, and is forgetful of the cleansing of past sins."
(2 Peter 1:9)
There's a wonderful passage in the first chapter of 2 Peter that encourages the believers to "support their faith" with goodness, knowledge, self-control, endurance, godliness, mutual affection, and love. The author comments that these attributes should be INCREASING among us, so we'll be kept from being unfruitful & ineffective. It's a beautifully written section of Scripture.
Then the author says that if you don't find these attributes (increasing!) in your life, then there's a good chance you're being "forgetful of the cleansing of past sins." How pointed. All have sinned. Many (most?!?) of our sins have been forgiven (if we've repented). We love the phrase "forgive & forget." However, maybe we should adjust that phrase a bit. It's good to "forget" when you're the one granting forgiveness... but when you're the one BEING FORGIVEN, it's best to remember! Remember the forgiveness. Remember the grace. Remember how you've been freed from your past. That should trigger a chain reaction of goodness, knowledge, self-control, endurance, godliness, mutual affection, and love!