2 Peter 1:9

1:9 But concerning the one who lacks such things – he is blind. That is to say, he is nearsighted, since he has forgotten about the cleansing of his past sins.

2 Peter 3:17

3:17 Therefore, dear friends, since you have been forewarned, be on your guard that you do not get led astray by the error of these unprincipled men and fall from your firm grasp on the truth.