People speak of heaven, paradise and hell as if they have been there on a conducted tour.+

People speak of heaven, paradise, and hell as if they have been there on a conducted tour.

How can they speak of heaven, paradise, and hell as if they are real when no one can reach there before their physical death?  

Just because it is written in their religious books they believe in such a thing.   It is not the religious idea of heaven it is the Spiritual heaven.

The world in which you exist hides the kingdom of heaven. The kingdom of heaven is beyond the ‘I’. Cross the 'I' and enter the kingdom of heaven.

"The kingdom of heaven is within you." The kingdom of heaven is within the Spirit, the innermost Self. The kingdom of heaven is the state of God. In that state, nothing exists other than God, the Spirit? In the kingdom of God, there is unity in diversity. There is oneness, the one without the Second.

The kingdom of heaven" is that the Advaitic state. The Advaitic state is the nature of God, the Spirit.

 In the nature of God, the Spirit there is no more pain, nor sorrow. There is no duality in the nature of God, the Spirit.  God, the Spirit lights the whole universe. God alone is real and the universe is merely an illusion created out of God or Spirit.  

Gospel Thomas logian 22: - Jesus saw infants being suckled.  He said to his disciples, “These infants being suckled are like those who enter the kingdom.”

They said to him, “Shall we then, as children, enter the kingdom?”

Jesus version of Advaita:  “When you make the two one, and when you make the inside like the outside  and the outside like the inside, and the above like the below, and when you make the male and the female one and the same, so that the male not be male nor the female is female; and when you fashion eyes in the place of an eye,  and a hand in place of a hand, and a foot in place of a foot, and a likeness in place of a likeness; then will you enter the kingdom.”

Santthosh Kumaar: ~ When one realizes mind (matter) and Soul (Spirit), the 'Self' are one in essence then there is no place for the duality. Without duality, the universe ceases to exist as a reality. Without the universe, your existence within the universe is merely an illusion because there is scope for two because everything is created out of single stuff.   That single stuff is Spirit. The spirit or the consciousness

Jesus said: ~ Do not throw your pearls before pigs, lest they trample them underfoot and turn to attack you. (Matthew -7:6)

~ Jesus meant Self-knowledge or knowledge of the Spirit or Advaitic wisdom (pearls).  :~Santthosh Kumaar