A Treatise Concerning The Sanctification Of The Lord�������s Day is a book written by John Willison in 1820. The book is focused on the importance of observing the Sabbath and the ways in which it can be sanctified. Willison argues that the Sabbath is a holy day that should be set apart from other days of the week, and that it is a time for rest, worship, and reflection. He discusses the biblical basis...