I thought this was a very interesting observation by Spurgeon, particularly citing the Doctor who kept records of death bed confessions of faith.
Ah! dear friends, it has been my lot to stand by many a death-bed, and to see many such a repentance as this; I have seen the man, when worn to a skeleton, sustained by pillows in his bed; and he has said, when I have talked to him of judgment to come, “Sir, I feel I have been guilty, but Christ is good; I trust in him.” And I have said within myself, ” I believe the man’s soul is safe.” But I have always come away with the melancholy reflection that I had no proof of it, beyond his own words; for it needs proof in acts and in future life, in order to sustain any firm conviction of a man’s salvation. You know that great fact, that a physician once kept a record of a thousand persons who thought they were dying, and whom he thought were penitents; he wrote their names down in a book as those, who, if they had died, would go to heaven; they did not die, they lived; and he says that out of the whole thousand he had not three persons who turned out well afterwards, but they returned to their sins again, and were as bad as ever. Ah! dear friends, I hope none of you will have such a death-bed repentance as that; I hope your minister or your parents will not have to stand by your bedside, and then go away and say, “Poor fellow, I hope he is saved. But alas! death-bed repentances are such flimsy things; such poor, such trivial grounds of hope, that I am afraid, after all, his soul may be lost.”