Good word, Frank.
βασιλειÌα
basileia
bas-il-i'-ah
From G935; properly royalty, that is, (abstractly) rule, or (concretely) a realm (literally or figuratively): - kingdom, + reign.
The Kingdom is the domain of the King. When we talk about God's kingdom, we talk about God's government. Jesus is the Governor.
Matt 2:6 And thou Bethlehem, in the land of Juda, art not the least among the princes of Juda: for out of thee shall come a Governor, that shall rule my people Israel.
Scriptural response to God's government is OBEDIENCE. Not only outward but inward obedience. True submission to Jesus is to have a right heart attitude to God. "To want to". The only way to do this, "to want to obey God", is if the Holy Spirit is indwelling us.
The Kingdom of God is present and eternal. The Kingdom of God is here and now and we don't have to yearn for experiencing it in the future, as we should be experiencing it, here and now.
Matt 12:28 But if I cast out devils by the Spirit of God, then the kingdom of God is come unto you.
Matt 10:8 Heal the sick, cleanse the lepers, raise the dead, cast out devils: freely ye have received, freely give.
Luke 10:9 And heal the sick that are therein, and say unto them, The kingdom of God is come
Luke 10:11 Even the very dust of your city, which cleaveth on us, we do wipe off against you: notwithstanding BE YE SURE OF THIS, that the kingdom of God is come nigh unto you.
Mar 9:1 And he said unto them, Verily I say unto you, That there be some of them that stand here, which shall not taste of death, till they have seen the kingdom of God come with power.
Many that were with Jesus as He walked the earth, were also alive when He rose from the dead with resurrection power.
Rom 1:4 And declared to be the Son of God WITH POWER, according to the spirit of holiness, by the resurrection from the dead:
And were present on the Day of Pentecost when the Holy Spirit came in power.
The Kingdom of God is imperative - it is imperative that man choose the Kingdom or suffer the consquences. Repent or Perish!
Luke 13:3 I tell you, Nay: but, except ye repent, ye shall all likewise perish.
The Kingdom of God is visible though not material. Spiritual does not mean invisible. The Spiritual Kingdom is within man - hence a visible kingdom.
Luke 17:20-21 And when he was demanded of the Pharisees, when the kingdom of God should come, he answered them and said, The kingdom of God cometh not with observation: Neither shall they say, Lo here! or, lo there! for, behold, the kingdom of God is within you.
The Kingdom of God is moral (for lack of a better term) yet not nationalistic. And when I say moral, it is not like man's morals, because the "engine" of heaven's values is love from a pure heart which is representative of God. A pure heart is not selfish, and does not take advantage of it's fellow man. A pure heart lays down it's life for others and it's motives are pure.
The Kingdom of God has one enemy...the Kingdom of Jesus Christ versus the Kingdom of Satan, Light vs Darkness. It has nothing to do with earthly kingdoms vs earthly kingdoms.
The Kingdom of God is social as well as individualistic. I have a personal relationship with God and because of this, I am related to others. The Church of Jesus Christ, in all respects is really a counter-culture (or should be) to this world. A new race, a new people a new way of thinking and living. Jesus Himself formed the model in which we are to live on this earth.
The Kingdom of God is universal as well as local.
Luke 13:29 And they shall come from the east, and from the west, and from the north, and from the south, and shall sit down in the kingdom of God.