It is the discipline that studies the final causes or ultimate realities. If this idea is projected onto Christianity, Christian eschatology is a branch of theology that reflects on the ultimate meaning of existence. This term comes from the Greek and it is made up of two parts: eskhatos which means the last or the end and, on the other hand, lodge, which means study or knowledge.
Biblical eschatology refers to the branch of theology dedicated to the study of the doctrine of the last prophecies that will occur with reference to the end of the world in God's plan, both on a personal and general level of all humanity. Eschatology comes from the Greek "eskhatos" last and "logos" treated (or verb, living word, intelligence or teaching). For Christianity, Biblical eschatology could be translated as "teaching (of the Lord) on the latter." John 1: 1 describes Jesus as the Logos or Word of God.
The Lord Jesus Christ speaks to us continuously of eschatology, indeed, the Gospel itself is pure eschatology, since it presents us with a prophecy, the greatest of the prophecies that man has ever heard, that God calls us to His eternal Kingdom through our individual salvation by faith in the work of His Son Jesus Christ on the Cross of Golgotha, events that were prophesied by different prophets of the Bible in different previous times and that are being fulfilled according to God's plan.
For Christian theologians eschatological questions are part of human nature. On the other hand, questions about ultimate ends help us to reflect on our own existence and give importance to things that have true value.
In Christian theology it is argued that the person who lives close to God and following his teachings has no reason to be afraid when asking eschatological questions.
In several passages of the Bible reference is made to the end of time. Despite this announcement, human beings do not know when this ending will take place. The eschatological questions are, in short, something more than simple questions, because through them we can find the meaning of earthly life.
The very heart of eschatology is the so-called “Parousia” or second coming of Jesus Christ in glory as King of kings at the end of prophesied times, along with the resurrection and rapture, and the day of judgment, which precede the establishment of His Kingdom. eternal. Just as the prophecies about His first coming were fulfilled, so will the prophecies about the Parousia no doubt be fulfilled.