Do you realize that whenever an unsaved sinner believes on the Lord Jesus Christ for the free gift of everlasting life, that in that very moment of faith in Christ, that he is not only born into the family of God forever, but that he also becomes a citizen of the kingdom of God.  The kingdom of God is in the midst of the world, composed of every single individual who has believed in Jesus for the free gift of everlasting life.  But, that is only the beginning. Once we know that we are members of the invisible kingdom that is right here and now, we can look forward to the kingdom that will indeed come with observation. Other passages mentioned include: 1 Thessalonians 5:2-3; Revelation 6-18; Colossians 1:13; John 5:24; John 6:47.