In old times a culprit, when at the gallows, was allowed to select a Psalm, which was then sung, thereby lengthening the chances of the arrival of a reprieve. It is reported of one of the chaplains to the famous Montrose, that being condemned in Scotland to die for attending his master in some of his exploits, he selected the 119th Psalm. It was well for him that he did so, for they had sung it half through before the reprieve came. A shorter Psalm, and he would have been hung.
— Frank H. Stauffer, The Queer, the Quaint and the Quizzical, 1882