The combination of external evidence and internal evidence is used to resolve the textual problem that exists in Revelation 1:4. Dr. Daniel B. Wallace of the Center for the Study of New Testament Manuscripts (CSNTM) uses the basic principles of textual criticism, to choose the reading that best explains the rise of the other(s), to come to the conclusion that the author, John, intentionally made a “grammatical blunder” for the purpose of making allusion to the Old Testament passage of Exodus 3:14.