Now there was a man of the Pharisees named Nicodemus, a ruler of the Jews. This man came to Jesus by night and said to Him, ‘Rabbi, we know that You have come from God as a teacher, for no one can do these things that You do unless God is with him.’ Jesus answered and said to him, ‘Truly, truly I say to you, unless one is born again, he cannot see the kingdom of God.’ Nicodemus said to Him, ‘How can a man be born when he is old? He cannot enter a second time into his mother’s womb and be born, can he?’ Jesus answered, ‘Truly, truly I say to you, unless one is born of water and the Spirit, he cannot enter into the kingdom of God. That which is born of the flesh is flesh, and that which is born of the Spirit is spirit. Do not be amazed that I said to you, you must be born again. The wind blows where it wishes and you hear the sound of it, but do not know where it comes from and where it’s going. So is everyone who is born of the Spirit.’ Nicodemus said to Him, ‘How can these things be?’ Jesus answered and said to him, ‘Are you the teacher of Israel and do not understand these things?’”The message of our Lord is very simple.We can enter the Kingdom of God through being Born-Again.The point of our Lord here is this God created you by the means of your parents, but nonetheless God created you,your parents gave you physicality but only God can create a spirit in you. In the spiritual sense being Born Again is an act of God by which He recreates you.It's a new birth.We recieved a new life,new nature,new character,new disposition,the new mind of God. And we make no contribution to that.