Into the Stream - A Study Guide on the First Stage of Awakening by. The Pali Canon, the scripture of the Theravada Buddhist Tradition written 29 BCE, recognizes four levels of Awakening. The first of which is called stream entry. The name indicates a stream that will inevitably lead to enlightenment. This study guide on stream entry is divided into two parts. The first deals with the practices leading to stream entry; the second, with the experience of stream entry and its results.