You must be born of the water and spirit to enter, Jesus describes what it's like in parables, but what is the kingdom of God? Is it the church, or the milllenial reign, or the third heaven, or the new heaven and earth, or something else?
Daniel 2:44 says "and in the days of these kings the God of heaven will set up a kingdom....."
Revelation 11:15 says " .....the kingdoms of this world have become the kingdoms of our Lord ......."
It appears to me that the kingdom of God is the millenial reign. But what about the people that are left after armegeddon, they won't be born again. They won't be citizens of God,s kingdom so they won't be entered in.
Romans 14:17 says "the kingdom of God is not eating and drinking, but righteousness and peace and joy in the Holy Spirit" but this describes how it is other than what it is.
ARPH