This question might depend on what was narrated after Jesus (Peace be upon him) when he said: "He will not enter the Kingdom that who not born twice". This meaning corresponds with what God says in Qur'an:
6:122. "Can he who was dead, to whom We gave life, and a light whereby he can walk amongst people".
This means that whoever wants to be acquainted with the world of The Kingdom while he is still in this life, he should get rid of the desires inside him, like sex, food, drinks, sleep, dignity, wealth … etc., the desires that make man connected to this world, adoring perishable things and stuck to these desires.
If he exalts these desires and replaces them by loving God, loving the apostle of God, keeping to good deeds and doing favors, the covering of his heart will be removed, the eye of his insight will be illuminated and then he can be enjoyed by seeing the lights of the world of The Kingdom.
Then he feels as if he is newborn because a child witnesses the world of The Kingdom soon after his birth and before he realizes by senses, he is deprived of this after he gets senses like hearing, sight, smell, touch, taste and others. If he regains this case, then he is as it was said: "Born twice".