This is taken from the Autobiography of George Müller: A Million and a Half in Answer to Prayer published by Westminster Literature Resources. George Müller was an example to us all and one of the most admirable men in relatively recent history that I know of. I highly recommend the Autobiography, and you could probably profit from any book by or about him.—PD
A sister in the Lord in Ireland, who did not see her acceptance before God, and who was habitually without the assurance that she is a child of God, that she is born again, that her sins are forgiven, and that she will be saved, in her distress of mind wrote to me about this time. As her case is by no means a solitary one, but as there are so many children of God who do not know that they are children of God; as there are so many whose sins are forgiven who do not know that they are forgiven; and as there are so many who will be saved, who do not know that they will be saved, and who are continually afraid of what would become of them were they to be taken out of the world; I have thought it well to say something here on this most important subject.