The Johannine Epistles reference the presence of the last days by repeatedly mentioning the presence of the antichrist. 1 John 2:18 states, “Dear children, this is the last hour; and as you have heard that the antichrist is coming, even now many antichrists have come. This is how we know it is the last hour.” Also, 1 John 2:28 mentions Christ’s future second coming which may happen at any moment, and so Christians should persevere until his coming so that at Christ’s coming they may be confident that they “shall be like him, for [they] shall see him as he is” (1 John 3:2).
The book of Revelation opens by explaining that Christ through his resurrection has taken the position of “ruler of the kings of the earth” (1:5) and has in his possession the “keys of death and Hades” (Rev 1:18). Christ is the eschatological messianic king, and he has established his messianic kingdom. Christ is the “firstborn from among the dead,” (1:5) and so his resurrection has inaugurated the fulfillment of the resurrection of the saints who will rule with him in his kingdom. Revelation expects the imminent return of Christ where he will judge the ungodly (6:12-17) and reward and bless his people (11:18). Christ will establish his kingdom in its final, complete, and eternal form (11:15-17).