The Ascension of Isaiah is a pseudepigraphical Judeo-Christian text. Scholarly estimates regarding the date of the Ascension of Isaiah range from 70 AD to 175 AD. Many scholars believe it to be a compilation of several texts completed by an unknown Christian scribe who claimed to be the Prophet Isaiah, while an increasing number of scholars in recent years have argued that the work is a unity by a single author that may have utilized multiple sources.