Holding Him to the Scriptures by R.A.Torrey

https://www.sermonindex.net/modules/articles /index.php?view=article&aid=503

One time I received a letter, a very heartbroken letter, from a father who was a Presbyterian minister. He wrote that he had a son who was in awful spiritual darkness. The son thought that he had committed the unpardonable sin, and he was plunged into absolute despair....

Sorry but I can not make the link work but if the whole link is highlighted, copied, and pasted to the browser it will work.