And did those feet in ancient time
Walk upon England’s mountains green?
And was the Holy Lamb of God
On England’s pleasant pastures seen?
And did the countenance divine
Shine forth upon our clouded hills?
And was Jerusalem builded here
Among these dark satanic mills?

Bring me my bow of burning gold!
Bring me my arrows of desire!
Bring me my spear! O clouds, unfold!
Bring me my chariot of fire!
I will not cease from mental fight,
Nor shall my sword sleep in my hand,
Till we have built Jerusalem
In England’s green and pleasant land.

- William Blake, Jerusalem -
Music

God's Kingdom, his reign, will come at the end of the age in a mighty irruption into history inaugurating the perfect order of the age to come. But God's Kingdom, his reign, has already come into history in the person and mission of Jesus. The presence of God's Kingdom means the dynamic presence of his reign. It means that God is no longer waiting for men to submit to his reign but has taken the initiative and has invaded history in a new and unexpected way. The Kingdom of God is not merely an abstract concept that God is the eternal King and rules over all; it is also a dynamic concept of the acting God. God's reign which will come at the end of the age to accomplish God's redemptive purpose in the world has also come into the midst of human history in the person and mission of Jesus. God the heavenly King, who will act mightily tomorrow is also acting today in Jesus. It is the same God, the same rule, the same Kingdom dynamically at work among men. (George E. Ladd, The Presence of the Future (2000),p. 144)

  What comfort do you derive from the article of the life everlasting?
That, since I now feel in my heart the beginning of eternal life, after this life I shall possess perfect bliss, such as eyes has not seen nor ear heard, neither has entered into the heart of man - therein to praise God forever (Heidelberg Catechism Q.58)

The Kingdom of God implies cosmic redemption. The Kingdom of God, as we have seen, does not mean merely the salvation of certain individuals nor even the salvation of a chosen group of people. It means nothing less than the complete renewal of the entire cosmos, culminating in the new heaven and the new earth... Being a citizen of the Kingdom, therefore, means that we should see all of life and all of reality in the light of the goal of the redemption of the cosmos. This implies, as Abraham Kuyper once said, that there is not a thumb-breadth of the universe about which Christ does not say, "It is mine". This implies a Christian philosophy of history: all of history must be seen as the working out of God's eternal purpose. This Kingdom vision includes a Christian philosophy of culture: art and science reflect the glory of God and are therefore to be pursued for his praise. It also includes a Christian view of vocation: all callings are from God, and all that we do in everyday life is to be done to GOd's praise whether this be study, teaching, preaching, business, industry, or housework (p.s. ennie!) (Anthony A. Hoekema, The Bible and the Future, pp. 53,54)