John Wesley on 2 Peter 1:9

But he that wanteth these - That does not add them to his faith. Is blind - The eyes of his understanding are again closed. He cannot see God, or his pardoning love. He has lost the evidence of things not seen. Not able to see afar off - Literally, purblind. He has lost sight of the precious promises: perfect love and heaven are equally out of his sight. Nay, he cannot now see what himself once enjoyed. Having, as it were, forgot the purification from his former sins - Scarce knowing what he himself then felt, when his sins were forgiven.