Clement of Alexandria, Irenaeus, Tertullian, and Origen, all of whom were of the late second and early third centuries, testify to John’s writership.

6. What evidence indicates that the Gospel of John was written outside Palestine, at or near Ephesus?

⁶ As to Ephesus or its vicinity as the place of writing, the historian Eusebius (c. 260-342 C.E.) quotes Irenaeus as saying: “John, the disciple of the Lord, who had even rested on his breast, himself also gave forth the gospel, while he was living at Ephesus in Asia.”a