These letters, to congregations in Ephesus, Smyrna, Pergamum, Thyatira, Sardis, Philadelphia, and Laodicea, reveal that Christians in this part of Asia Minor were then facing various dangers, such as immorality, sectarianism, and apostasy. ​ — Revelation 1: 9, 11; 2: 14, 15, 20.
Need Efesose, Smürna, Pergamoni, Tüatiira, Sardese, Filadelfia ja Laodikea kogudusele saadetud kirjad annavad teada, et selles Väike - Aasia piirkonnas varitsesid tol ajal kristlasi mitmesugused ohud, nagu ebamoraalsus, sektantlus ja usutaganemine.