Kingdom of God in the context of "Messianic Age"

Eschatology (/ˌɛskəˈtɒlədʒi/ ; from Ancient Greek ἔσχατος (éskhatos) 'last' and -logy) concerns expectations of the end of present age, human history, or the world itself. The end of the world or end times is predicted by several world religions (both Abrahamic and Dharmic), which teach that negative world events will reach a climax. Belief that the end of the world is imminent is known as apocalypticism, and over time has been held both by members of mainstream religions and by doomsday cults. In the context of mysticism, the term refers metaphorically to the end of ordinary reality and to reunion with the divine. Many religions treat eschatology as a future event prophesied in sacred texts or in folklore, while other religions may have concepts of renewal or transformation after significant events.

The Abrahamic religions maintain a linear cosmology, with end-time scenarios containing themes of transformation and redemption. In Judaism, the term "end of days" makes reference to the Messianic Age and includes an in-gathering of the exiled Jewish diaspora, the coming of the Messiah, the resurrection of the righteous, and the world to come. Christianity depicts the end time as a period of tribulation that precedes the second coming of Christ, who will face the rise of the Antichrist along with his power structure and false prophets, and usher in the Kingdom of God. The explicit description of a new earth is primarily found in Christian teachings (this description can be found in Chapter 21 of the Book of Revelation). In later traditions of Islam, separate hadiths detail the Day of Judgment as preceded by the appearance of the Masīḥ ad-Dajjāl, and followed by the descending of ʿĪsā (Jesus), which shall triumph over the false Messiah or Antichrist; his defeat will lead to a sequence of events that will end with the sun rising from the west and the beginning of the Qiyāmah (Judgment Day).

Scivias is an illustrated work by Hildegard von Bingen, completed in 1151 or 1152, describing 26 religious visions she experienced. It is the first of three works that she wrote describing her visions, the others being Liber vitae meritorum and De operatione Dei (also known as Liber divinorum operum). The title comes from the Latin phrase Sci vias Domini ('Know the Ways of the Lord'). The book is illustrated by 35 miniature illustrations, more than that are included in her two later books of visions.

The work is divided into three parts, reflecting the Trinity. The first and second parts are approximately equal in length, while the third is as long as the other two together. The first part includes a preface describing how she was commanded to write the work, and includes six visions dealing with themes of creation and the Fall. The second part consists of seven visions and deals with salvation through Jesus Christ, the Church, and the sacraments. The third part, with thirteen visions, is about the coming kingdom of God, through sanctification, and increased tension between good and evil. The final vision includes 14 songs, plus a portion of the music drama which was later published as the Ordo Virtutum. In each vision, she first described what she saw, and then recorded explanations she heard, which she believed to be the "voice of heaven."

The world to come, age to come, heaven on Earth, and the Kingdom of God are eschatological phrases reflecting the belief that the current world or current age is flawed or cursed and will be replaced in the future by a better world, age, or paradise.

The concept is related to, but differs from, the concepts of heaven or the afterlife in that heaven is another place or state of existence generally seen as above the world, and the afterlife is generally an individual's continued existence after death.

Chapter 18 of the Gospel of Matthew contains the fourth of the five Discourses of Matthew, also called the Discourse on the Church or the ecclesiastical discourse. It compares "the greatest in the Kingdom of Heaven" to a child, and also includes the parables of the lost sheep and the unforgiving servant, the second of which also refers to the Kingdom of Heaven. The general themes of the discourse are the anticipation of a future community of followers, and the role and "spiritual condition" of his apostles in leading it.

Dale Allison states that this chapter offers "Instructions for the Church". Addressing his apostles in Matthew 18:18, Jesus states: "what things soever ye shall bind on earth shall be bound in heaven; and what things soever ye shall loose on earth shall be loosed in heaven". The discourse emphasizes the importance of humility and self-sacrifice as the high virtues within the anticipated community. It teaches that in the Kingdom of God, it is childlike humility that matters, not social prominence and clout.

Church visible is a term of Christian theology and ecclesiology referring to the visible community of Christian believers on Earth, as opposed to the Church invisible or Church triumphant, constituted by the fellowship of saints and the company of the elect.

In ecclesiology, the Church visible has many names, such as Kingdom of God, Disciples of Christ and People of God. St. Ignatius of Antioch was one of the first Christian authors to write about the subject, insisting that the Church visible was centered on the Bishop and the Eucharist or Last Supper.

Inaugurated eschatology is the belief in Christian theology that the end times were inaugurated in the life, death and resurrection of Jesus, and thus there are both "already" and "not yet" aspects to the Kingdom of God. George Eldon Ladd suggests that the Kingdom of God is "not only an eschatological gift belonging to the Age to Come; it is also a gift to be received in the old aeon."

This approach was first developed by Geerhardus Vos, especially in his 1930 work, The Pauline Eschatology. Later, Oscar Cullmann sought to combine the "thorough-going eschatology" of Albert Schweitzer with the "realized eschatology" of C. H. Dodd. Cullmann suggested the analogy of D Day and V Day to illustrate the relationship between Jesus's death and resurrection on the one hand, and his Second Coming on the other.

The Power of the Keys, also known as the Office of the Keys, is a responsibility given to St. Peter to usher in the Kingdom of God on the Day of Pentecost, and a responsibility given to the other apostles by Jesus, according to Matthew 16:19 and Matthew 18:18. It is understood as a responsibility to admit or exclude from church membership (excommunicate), to set church policy and teachings (dogma), to render binding interpretations of Sacred Scripture (ancient rabbis were known to make binding interpretations of the Mosaic law), and to bind and loose sins. The verb 'to loose' (or to free) is used this way in John 20:23, Revelation 1:5 and by the Early Church Fathers.

In Christianity, "the keys are an office and power given by Christ to the Church for binding and loosing sins." It is a power that Roman Catholics believe to have been conferred first on St. Peter then afterwards on his successors in the office of the Roman Catholic Papacy. There is a description of the conferral of the Power of the Keys on St. Peter (originally named Simon) in Matthew 16:13: