The 'land of nod' refers to wandering in the book of Genesis - nod in Hebrew meant wandering. In more recent usage it refers to the land of sleep: where you go when you fall asleep. The most famous and earliest literary reference to the land of nod as we use the expression now is in Jonathan Smith's Gulliver's Travels.
The land of nod is a place mentioned in the Book of Genesis in the Old Testament. It is referenced in John Steinbeck's famous novel, "East of Eden". There is also a poem called "The Land of Nod" by Robert Louis Stevenson.
The phrase "The Land of Nod" originates in the book of Genesis of the Hebrew Bible. It is noted as the place East of Eden to which Cain flew after murdering his brother, Abel. It is also the title of a poem by Robert Louis Stevenson and a place in Gulliver's Travels.