Acts 10:42 refers to the resurrected Jesus as: “he who is ordained of God to be the Judge of the living and the dead.” The role played by Jesus in the judgment of God is emphasized in the most widely used Christian confessions, with the Nicene Creed stating that Jesus “sits on the right hand of the Father; shall come
Both the Old and New Testaments refer to the word, kingdom , as the rule and reign of a king, (1.) and not usually a territory. So kingdom of heaven can be understood to mean , “rule of God ”. The rule of God is working within the lives of all who draw near to Jesus .
Thought to be the main content of Jesus’s preaching in the Gospel of Matthew, the ” kingdom of heaven ” described “a process, a course of events, whereby God begins to govern or to act as king or Lord, an action, therefore, by which God manifests his being- God in the world of men.”
Its characteristics and values could be as follows: faith. simplicity of a child / purity. belongs to those who suffer. love God and love your neighbour. honesty / truth. humility. joy in others’ achievements. wealth and ambition must be sacrificed.
The keys of the kingdom is a Christian concept of eternal church authority. The authority can be literally traced to one passage in the New Testament, where Jesus mentions them first in response to St. Peter answering a question, and secondly in speaking to a group of disciples.
Content. In the King James Version of the Bible the text reads: “And saying , Repent ye, for the kingdom of heaven is at hand .” The New International Version translates the passage as: “and saying , ” Repent, for the kingdom of heaven is near .” For a collection of other versions see BibleHub Matthew 3:2.
Hebrew Bible “Yours is the kingdom , O Lord ” is used in 1 Chronicles 29:10–12 and “His kingdom is an everlasting kingdom ” in Daniel 3:33, for example. “The Hebrew word malkuth  refers first to a reign, dominion, or rule and only secondarily to the realm over which a reign is exercised. 
A kingdom is a piece of land that is ruled by a king or a queen. A kingdom is often called a monarchy, which means that one person, usually inheriting their position by birth or marriage, is the leader, or head of state.
Scholars agree that ” poor in spirit ” does not mean lacking in spirit , be it courage, the Holy Spirit , or religious awareness. Rather it is that poverty is not only a physical condition, but also a spiritual one.
Kingdom of God , also called Kingdom Of Heaven, in Christianity, the spiritual realm over which God reigns as king, or the fulfillment on Earth of God’s will. The phrase occurs frequently in the New Testament, primarily used by Jesus Christ in the first three Gospels.