There is one death bed repentance recorded in the Bible (the thief on the cross), so that no one despair, but there is ONLY one, so that no one will presume.
When Levin thought what he was and what he was living for, he could find no answer to the questions and was reduced to despair; but when he left off questioning himself about it, it seemed as though he knew both what he was and what he was living for, acting and living resolutely and without hesitation.
What seems to be, is, to those to whom it seems to be, and is productive of the most dreadful consequences to those to whom it seems to be, even of torments, despair, eternal death.
My only refuge, as a serious young man, from the despair of my financial burden to my family, is that I did everything I could to never permit myself any amusements or diversions except those afforded by my studies.