The Parousia is a New Testament commentary by James Stuart Russell, wherein the authority attempts to clarify and explain aspects of prophecy explained in the Gospels and elsewhere in the NT.

The term `Parousia' is derived from a Greek word meaning simply, `a coming' or `a presence'. In the context of the Bible and Christianity, it refers to the return of Jesus Christ as a core prophecy of the New Testament scripture. It is by investigating all of this material that James Russell seeks to make clear what exactly the Bible predicts and what specifically believers may expect in the future, and what aspects of the prophecy have already occurred in the distant past.

Exhaustively researched and painstakingly compiled, Russell's thesis is lengthy and split into three parts: firstly, he analyses the four Gospels of Christ, secondly, he examines the Acts of the Apostles, and lastly, he looks at the Book of Revelation and the visions therein. No detail is spared from the author's learned gaze.